19907580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:200

約数の個数: 192

約数和(自身を含む): 72253440

約数和(自身を除く): 52345860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 31, 33, 35, 42, 44, 55, 60, 62, 66, 70, 77, 84, 93, 105, 110, 124, 132, 139, 140, 154, 155, 165, 186, 210, 217, 220, 231, 278, 308, 310, 330, 341, 372, 385, 417, 420, 434, 462, 465, 556, 620, 651, 660, 682, 695, 770, 834, 868, 924, 930, 973, 1023, 1085, 1155, 1302, 1364, 1390, 1529, 1540, 1668, 1705, 1860, 1946, 2046, 2085, 2170, 2310, 2387, 2604, 2780, 2919, 3058, 3255, 3410, 3892, 4092, 4170, 4309, 4340, 4587, 4620, 4774, 4865, 5115, 5838, 6116, 6510, 6820, 7161, 7645, 8340, 8618, 9174, 9548, 9730, 10230, 10703, 11676, 11935, 12927, 13020, 14322, 14595, 15290, 17236, 18348, 19460, 20460, 21406, 21545, 22935, 23870, 25854, 28644, 29190, 30163, 30580, 32109, 35805, 42812, 43090, 45870, 47399, 47740, 51708, 53515, 58380, 60326, 64218, 64635, 71610, 86180, 90489, 91740, 94798, 107030, 120652, 128436, 129270, 142197, 143220, 150815, 160545, 180978, 189596, 214060, 236995, 258540, 284394, 301630, 321090, 331793, 361956, 452445, 473990, 568788, 603260, 642180, 663586, 710985, 904890, 947980, 995379, 1327172, 1421970, 1658965, 1809780, 1990758, 2843940, 3317930, 3981516, 4976895, 6635860, 9953790, 19907580]

約数ペア:

[(1, 19907580), (2, 9953790), (3, 6635860), (4, 4976895), (5, 3981516), (6, 3317930), (7, 2843940), (10, 1990758), (11, 1809780), (12, 1658965), (14, 1421970), (15, 1327172), (20, 995379), (21, 947980), (22, 904890), (28, 710985), (30, 663586), (31, 642180), (33, 603260), (35, 568788), (42, 473990), (44, 452445), (55, 361956), (60, 331793), (62, 321090), (66, 301630), (70, 284394), (77, 258540), (84, 236995), (93, 214060), (105, 189596), (110, 180978), (124, 160545), (132, 150815), (139, 143220), (140, 142197), (154, 129270), (155, 128436), (165, 120652), (186, 107030), (210, 94798), (217, 91740), (220, 90489), (231, 86180), (278, 71610), (308, 64635), (310, 64218), (330, 60326), (341, 58380), (372, 53515), (385, 51708), (417, 47740), (420, 47399), (434, 45870), (462, 43090), (465, 42812), (556, 35805), (620, 32109), (651, 30580), (660, 30163), (682, 29190), (695, 28644), (770, 25854), (834, 23870), (868, 22935), (924, 21545), (930, 21406), (973, 20460), (1023, 19460), (1085, 18348), (1155, 17236), (1302, 15290), (1364, 14595), (1390, 14322), (1529, 13020), (1540, 12927), (1668, 11935), (1705, 11676), (1860, 10703), (1946, 10230), (2046, 9730), (2085, 9548), (2170, 9174), (2310, 8618), (2387, 8340), (2604, 7645), (2780, 7161), (2919, 6820), (3058, 6510), (3255, 6116), (3410, 5838), (3892, 5115), (4092, 4865), (4170, 4774), (4309, 4620), (4340, 4587)]