42018020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:213

約数の個数: 96

約数和(自身を含む): 101993472

約数和(自身を除く): 59975452

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 61, 62, 101, 110, 122, 124, 155, 202, 220, 244, 305, 310, 341, 404, 505, 610, 620, 671, 682, 1010, 1111, 1220, 1342, 1364, 1705, 1891, 2020, 2222, 2684, 3131, 3355, 3410, 3782, 4444, 5555, 6161, 6262, 6710, 6820, 7564, 9455, 11110, 12322, 12524, 13420, 15655, 18910, 20801, 22220, 24644, 30805, 31310, 34441, 37820, 41602, 61610, 62620, 67771, 68882, 83204, 104005, 123220, 135542, 137764, 172205, 190991, 208010, 271084, 338855, 344410, 381982, 416020, 677710, 688820, 763964, 954955, 1355420, 1909910, 2100901, 3819820, 4201802, 8403604, 10504505, 21009010, 42018020]

約数ペア:

[(1, 42018020), (2, 21009010), (4, 10504505), (5, 8403604), (10, 4201802), (11, 3819820), (20, 2100901), (22, 1909910), (31, 1355420), (44, 954955), (55, 763964), (61, 688820), (62, 677710), (101, 416020), (110, 381982), (122, 344410), (124, 338855), (155, 271084), (202, 208010), (220, 190991), (244, 172205), (305, 137764), (310, 135542), (341, 123220), (404, 104005), (505, 83204), (610, 68882), (620, 67771), (671, 62620), (682, 61610), (1010, 41602), (1111, 37820), (1220, 34441), (1342, 31310), (1364, 30805), (1705, 24644), (1891, 22220), (2020, 20801), (2222, 18910), (2684, 15655), (3131, 13420), (3355, 12524), (3410, 12322), (3782, 11110), (4444, 9455), (5555, 7564), (6161, 6820), (6262, 6710)]