20102971375

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{431}}^1\times {\mathrm{479}}^1$

素因数の和:985

約数の個数: 64

約数和(自身を含む): 27172454400

約数和(自身を除く): 7069483025

約数列:

[1, 5, 19, 25, 41, 95, 125, 205, 431, 475, 479, 779, 1025, 2155, 2375, 2395, 3895, 5125, 8189, 9101, 10775, 11975, 17671, 19475, 19639, 40945, 45505, 53875, 59875, 88355, 97375, 98195, 204725, 206449, 227525, 335749, 373141, 441775, 490975, 1023625, 1032245, 1137625, 1678745, 1865705, 2208875, 2454875, 3922531, 5161225, 8393725, 8464409, 9328525, 19612655, 25806125, 41968625, 42322045, 46642625, 98063275, 160823771, 211610225, 490316375, 804118855, 1058051125, 4020594275, 20102971375]

約数ペア:

[(1, 20102971375), (5, 4020594275), (19, 1058051125), (25, 804118855), (41, 490316375), (95, 211610225), (125, 160823771), (205, 98063275), (431, 46642625), (475, 42322045), (479, 41968625), (779, 25806125), (1025, 19612655), (2155, 9328525), (2375, 8464409), (2395, 8393725), (3895, 5161225), (5125, 3922531), (8189, 2454875), (9101, 2208875), (10775, 1865705), (11975, 1678745), (17671, 1137625), (19475, 1032245), (19639, 1023625), (40945, 490975), (45505, 441775), (53875, 373141), (59875, 335749), (88355, 227525), (97375, 206449), (98195, 204725)]