20810100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{977}}^1$

素因数の和:1065

約数の個数: 72

約数和(自身を含む): 61121088

約数和(自身を除く): 40310988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 71, 75, 100, 142, 150, 213, 284, 300, 355, 426, 710, 852, 977, 1065, 1420, 1775, 1954, 2130, 2931, 3550, 3908, 4260, 4885, 5325, 5862, 7100, 9770, 10650, 11724, 14655, 19540, 21300, 24425, 29310, 48850, 58620, 69367, 73275, 97700, 138734, 146550, 208101, 277468, 293100, 346835, 416202, 693670, 832404, 1040505, 1387340, 1734175, 2081010, 3468350, 4162020, 5202525, 6936700, 10405050, 20810100]

約数ペア:

[(1, 20810100), (2, 10405050), (3, 6936700), (4, 5202525), (5, 4162020), (6, 3468350), (10, 2081010), (12, 1734175), (15, 1387340), (20, 1040505), (25, 832404), (30, 693670), (50, 416202), (60, 346835), (71, 293100), (75, 277468), (100, 208101), (142, 146550), (150, 138734), (213, 97700), (284, 73275), (300, 69367), (355, 58620), (426, 48850), (710, 29310), (852, 24425), (977, 21300), (1065, 19540), (1420, 14655), (1775, 11724), (1954, 10650), (2130, 9770), (2931, 7100), (3550, 5862), (3908, 5325), (4260, 4885)]