21880452820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{347}}^1$

素因数の和:662

約数の個数: 192

約数和(自身を含む): 52785976320

約数和(自身を除く): 30905523500

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 43, 68, 76, 85, 86, 95, 170, 172, 190, 215, 227, 323, 340, 347, 380, 430, 454, 646, 694, 731, 817, 860, 908, 1135, 1292, 1388, 1462, 1615, 1634, 1735, 2270, 2924, 3230, 3268, 3470, 3655, 3859, 4085, 4313, 4540, 5899, 6460, 6593, 6940, 7310, 7718, 8170, 8626, 9761, 11798, 13186, 13889, 14620, 14921, 15436, 16340, 17252, 19295, 19522, 21565, 23596, 26372, 27778, 29495, 29842, 32965, 38590, 39044, 43130, 48805, 55556, 58990, 59684, 65930, 69445, 73321, 74605, 77180, 78769, 86260, 97610, 112081, 117980, 131860, 138890, 146642, 149210, 157538, 165937, 185459, 195220, 224162, 253657, 277780, 283499, 293284, 298420, 315076, 331874, 366605, 370918, 393845, 448324, 507314, 560405, 566998, 663748, 733210, 741836, 787690, 829685, 927295, 1014628, 1120810, 1133996, 1268285, 1339073, 1417495, 1466420, 1496611, 1575380, 1659370, 1854590, 2241620, 2536570, 2678146, 2834990, 2993222, 3152803, 3318740, 3387067, 3709180, 4819483, 5073140, 5356292, 5669980, 5986444, 6305606, 6695365, 6774134, 7483055, 9638966, 12611212, 13390730, 13548268, 14966110, 15764015, 16935335, 19277932, 24097415, 25442387, 26781460, 29932220, 31528030, 33870670, 48194830, 50884774, 57580139, 63056060, 64354273, 67741340, 96389660, 101769548, 115160278, 127211935, 128708546, 230320556, 254423870, 257417092, 287900695, 321771365, 508847740, 575801390, 643542730, 1094022641, 1151602780, 1287085460, 2188045282, 4376090564, 5470113205, 10940226410, 21880452820]

約数ペア:

[(1, 21880452820), (2, 10940226410), (4, 5470113205), (5, 4376090564), (10, 2188045282), (17, 1287085460), (19, 1151602780), (20, 1094022641), (34, 643542730), (38, 575801390), (43, 508847740), (68, 321771365), (76, 287900695), (85, 257417092), (86, 254423870), (95, 230320556), (170, 128708546), (172, 127211935), (190, 115160278), (215, 101769548), (227, 96389660), (323, 67741340), (340, 64354273), (347, 63056060), (380, 57580139), (430, 50884774), (454, 48194830), (646, 33870670), (694, 31528030), (731, 29932220), (817, 26781460), (860, 25442387), (908, 24097415), (1135, 19277932), (1292, 16935335), (1388, 15764015), (1462, 14966110), (1615, 13548268), (1634, 13390730), (1735, 12611212), (2270, 9638966), (2924, 7483055), (3230, 6774134), (3268, 6695365), (3470, 6305606), (3655, 5986444), (3859, 5669980), (4085, 5356292), (4313, 5073140), (4540, 4819483), (5899, 3709180), (6460, 3387067), (6593, 3318740), (6940, 3152803), (7310, 2993222), (7718, 2834990), (8170, 2678146), (8626, 2536570), (9761, 2241620), (11798, 1854590), (13186, 1659370), (13889, 1575380), (14620, 1496611), (14921, 1466420), (15436, 1417495), (16340, 1339073), (17252, 1268285), (19295, 1133996), (19522, 1120810), (21565, 1014628), (23596, 927295), (26372, 829685), (27778, 787690), (29495, 741836), (29842, 733210), (32965, 663748), (38590, 566998), (39044, 560405), (43130, 507314), (48805, 448324), (55556, 393845), (58990, 370918), (59684, 366605), (65930, 331874), (69445, 315076), (73321, 298420), (74605, 293284), (77180, 283499), (78769, 277780), (86260, 253657), (97610, 224162), (112081, 195220), (117980, 185459), (131860, 165937), (138890, 157538), (146642, 149210)]