17780620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6217}}^1$

素因数の和:6250

約数の個数: 48

約数和(自身を含む): 43874208

約数和(自身を除く): 26093588

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6217, 12434, 24868, 31085, 62170, 68387, 80821, 124340, 136774, 161642, 273548, 323284, 341935, 404105, 683870, 808210, 889031, 1367740, 1616420, 1778062, 3556124, 4445155, 8890310, 17780620]

約数ペア:

[(1, 17780620), (2, 8890310), (4, 4445155), (5, 3556124), (10, 1778062), (11, 1616420), (13, 1367740), (20, 889031), (22, 808210), (26, 683870), (44, 404105), (52, 341935), (55, 323284), (65, 273548), (110, 161642), (130, 136774), (143, 124340), (220, 80821), (260, 68387), (286, 62170), (572, 31085), (715, 24868), (1430, 12434), (2860, 6217)]