201990131450

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{189671}}^1$

素因数の和:189780

約数の個数: 72

約数和(自身を含む): 403238878560

約数和(自身を除く): 201248747110

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 59, 95, 118, 190, 295, 361, 475, 590, 722, 950, 1121, 1475, 1805, 2242, 2950, 3610, 5605, 9025, 11210, 18050, 21299, 28025, 42598, 56050, 106495, 189671, 212990, 379342, 532475, 948355, 1064950, 1896710, 3603749, 4741775, 7207498, 9483550, 11190589, 18018745, 22381178, 36037490, 55952945, 68471231, 90093725, 111905890, 136942462, 180187450, 212621191, 279764725, 342356155, 425242382, 559529450, 684712310, 1063105955, 1711780775, 2126211910, 3423561550, 4039802629, 5315529775, 8079605258, 10631059550, 20199013145, 40398026290, 100995065725, 201990131450]

約数ペア:

[(1, 201990131450), (2, 100995065725), (5, 40398026290), (10, 20199013145), (19, 10631059550), (25, 8079605258), (38, 5315529775), (50, 4039802629), (59, 3423561550), (95, 2126211910), (118, 1711780775), (190, 1063105955), (295, 684712310), (361, 559529450), (475, 425242382), (590, 342356155), (722, 279764725), (950, 212621191), (1121, 180187450), (1475, 136942462), (1805, 111905890), (2242, 90093725), (2950, 68471231), (3610, 55952945), (5605, 36037490), (9025, 22381178), (11210, 18018745), (18050, 11190589), (21299, 9483550), (28025, 7207498), (42598, 4741775), (56050, 3603749), (106495, 1896710), (189671, 1064950), (212990, 948355), (379342, 532475)]