20497620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2389}}^1$

素因数の和:2425

約数の個数: 96

約数和(自身を含む): 67455360

約数和(自身を除く): 46957740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 26, 30, 33, 39, 44, 52, 55, 60, 65, 66, 78, 110, 130, 132, 143, 156, 165, 195, 220, 260, 286, 330, 390, 429, 572, 660, 715, 780, 858, 1430, 1716, 2145, 2389, 2860, 4290, 4778, 7167, 8580, 9556, 11945, 14334, 23890, 26279, 28668, 31057, 35835, 47780, 52558, 62114, 71670, 78837, 93171, 105116, 124228, 131395, 143340, 155285, 157674, 186342, 262790, 310570, 315348, 341627, 372684, 394185, 465855, 525580, 621140, 683254, 788370, 931710, 1024881, 1366508, 1576740, 1708135, 1863420, 2049762, 3416270, 4099524, 5124405, 6832540, 10248810, 20497620]

約数ペア:

[(1, 20497620), (2, 10248810), (3, 6832540), (4, 5124405), (5, 4099524), (6, 3416270), (10, 2049762), (11, 1863420), (12, 1708135), (13, 1576740), (15, 1366508), (20, 1024881), (22, 931710), (26, 788370), (30, 683254), (33, 621140), (39, 525580), (44, 465855), (52, 394185), (55, 372684), (60, 341627), (65, 315348), (66, 310570), (78, 262790), (110, 186342), (130, 157674), (132, 155285), (143, 143340), (156, 131395), (165, 124228), (195, 105116), (220, 93171), (260, 78837), (286, 71670), (330, 62114), (390, 52558), (429, 47780), (572, 35835), (660, 31057), (715, 28668), (780, 26279), (858, 23890), (1430, 14334), (1716, 11945), (2145, 9556), (2389, 8580), (2860, 7167), (4290, 4778)]