19980821484

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{95087}}^1$

素因数の和:95559

約数の個数: 72

約数和(自身を含む): 54513950400

約数和(自身を除く): 34533128916

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 449, 468, 898, 1347, 1796, 2694, 4041, 5388, 5837, 8082, 11674, 16164, 17511, 23348, 35022, 52533, 70044, 95087, 105066, 190174, 210132, 285261, 380348, 570522, 855783, 1141044, 1236131, 1711566, 2472262, 3423132, 3708393, 4944524, 7416786, 11125179, 14833572, 22250358, 42694063, 44500716, 85388126, 128082189, 170776252, 256164378, 384246567, 512328756, 555022819, 768493134, 1110045638, 1536986268, 1665068457, 2220091276, 3330136914, 4995205371, 6660273828, 9990410742, 19980821484]

約数ペア:

[(1, 19980821484), (2, 9990410742), (3, 6660273828), (4, 4995205371), (6, 3330136914), (9, 2220091276), (12, 1665068457), (13, 1536986268), (18, 1110045638), (26, 768493134), (36, 555022819), (39, 512328756), (52, 384246567), (78, 256164378), (117, 170776252), (156, 128082189), (234, 85388126), (449, 44500716), (468, 42694063), (898, 22250358), (1347, 14833572), (1796, 11125179), (2694, 7416786), (4041, 4944524), (5388, 3708393), (5837, 3423132), (8082, 2472262), (11674, 1711566), (16164, 1236131), (17511, 1141044), (23348, 855783), (35022, 570522), (52533, 380348), (70044, 285261), (95087, 210132), (105066, 190174)]