21389060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1$

素因数の和:106

約数の個数: 192

約数和(自身を含む): 63866880

約数和(自身を除く): 42477820

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 19, 20, 22, 28, 34, 35, 38, 43, 44, 55, 68, 70, 76, 77, 85, 86, 95, 110, 119, 133, 140, 154, 170, 172, 187, 190, 209, 215, 220, 238, 266, 301, 308, 323, 340, 374, 380, 385, 418, 430, 473, 476, 532, 595, 602, 646, 665, 731, 748, 770, 817, 836, 860, 935, 946, 1045, 1190, 1204, 1292, 1309, 1330, 1462, 1463, 1505, 1540, 1615, 1634, 1870, 1892, 2090, 2261, 2365, 2380, 2618, 2660, 2924, 2926, 3010, 3230, 3268, 3311, 3553, 3655, 3740, 4085, 4180, 4522, 4730, 5117, 5236, 5719, 5852, 6020, 6460, 6545, 6622, 7106, 7310, 7315, 8041, 8170, 8987, 9044, 9460, 10234, 11305, 11438, 13090, 13244, 13889, 14212, 14620, 14630, 16082, 16340, 16555, 17765, 17974, 20468, 22610, 22876, 24871, 25585, 26180, 27778, 28595, 29260, 32164, 33110, 35530, 35948, 40205, 44935, 45220, 49742, 51170, 55556, 56287, 57190, 62909, 66220, 69445, 71060, 80410, 89870, 97223, 99484, 102340, 112574, 114380, 124355, 125818, 138890, 152779, 160820, 179740, 194446, 225148, 248710, 251636, 277780, 281435, 305558, 314545, 388892, 486115, 497420, 562870, 611116, 629090, 763895, 972230, 1069453, 1125740, 1258180, 1527790, 1944460, 2138906, 3055580, 4277812, 5347265, 10694530, 21389060]

約数ペア:

[(1, 21389060), (2, 10694530), (4, 5347265), (5, 4277812), (7, 3055580), (10, 2138906), (11, 1944460), (14, 1527790), (17, 1258180), (19, 1125740), (20, 1069453), (22, 972230), (28, 763895), (34, 629090), (35, 611116), (38, 562870), (43, 497420), (44, 486115), (55, 388892), (68, 314545), (70, 305558), (76, 281435), (77, 277780), (85, 251636), (86, 248710), (95, 225148), (110, 194446), (119, 179740), (133, 160820), (140, 152779), (154, 138890), (170, 125818), (172, 124355), (187, 114380), (190, 112574), (209, 102340), (215, 99484), (220, 97223), (238, 89870), (266, 80410), (301, 71060), (308, 69445), (323, 66220), (340, 62909), (374, 57190), (380, 56287), (385, 55556), (418, 51170), (430, 49742), (473, 45220), (476, 44935), (532, 40205), (595, 35948), (602, 35530), (646, 33110), (665, 32164), (731, 29260), (748, 28595), (770, 27778), (817, 26180), (836, 25585), (860, 24871), (935, 22876), (946, 22610), (1045, 20468), (1190, 17974), (1204, 17765), (1292, 16555), (1309, 16340), (1330, 16082), (1462, 14630), (1463, 14620), (1505, 14212), (1540, 13889), (1615, 13244), (1634, 13090), (1870, 11438), (1892, 11305), (2090, 10234), (2261, 9460), (2365, 9044), (2380, 8987), (2618, 8170), (2660, 8041), (2924, 7315), (2926, 7310), (3010, 7106), (3230, 6622), (3268, 6545), (3311, 6460), (3553, 6020), (3655, 5852), (3740, 5719), (4085, 5236), (4180, 5117), (4522, 4730)]