2018199625

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1699}}^1$

素因数の和:1787

約数の個数: 64

約数和(自身を含む): 2940537600

約数和(自身を除く): 922337975

約数列:

[1, 5, 13, 17, 25, 43, 65, 85, 125, 215, 221, 325, 425, 559, 731, 1075, 1105, 1625, 1699, 2125, 2795, 3655, 5375, 5525, 8495, 9503, 13975, 18275, 22087, 27625, 28883, 42475, 47515, 69875, 73057, 91375, 110435, 144415, 212375, 237575, 365285, 375479, 552175, 722075, 949741, 1187875, 1241969, 1826425, 1877395, 2760875, 3610375, 4748705, 6209845, 9132125, 9386975, 16145597, 23743525, 31049225, 46934875, 80727985, 118717625, 155246125, 403639925, 2018199625]

約数ペア:

[(1, 2018199625), (5, 403639925), (13, 155246125), (17, 118717625), (25, 80727985), (43, 46934875), (65, 31049225), (85, 23743525), (125, 16145597), (215, 9386975), (221, 9132125), (325, 6209845), (425, 4748705), (559, 3610375), (731, 2760875), (1075, 1877395), (1105, 1826425), (1625, 1241969), (1699, 1187875), (2125, 949741), (2795, 722075), (3655, 552175), (5375, 375479), (5525, 365285), (8495, 237575), (9503, 212375), (13975, 144415), (18275, 110435), (22087, 91375), (27625, 73057), (28883, 69875), (42475, 47515)]