68618420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 72

約数和(自身を含む): 160073592

約数和(自身を除く): 91455172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 52, 65, 82, 130, 157, 164, 205, 260, 314, 410, 533, 628, 785, 820, 1066, 1570, 1681, 2041, 2132, 2665, 3140, 3362, 4082, 5330, 6437, 6724, 8164, 8405, 10205, 10660, 12874, 16810, 20410, 21853, 25748, 32185, 33620, 40820, 43706, 64370, 83681, 87412, 109265, 128740, 167362, 218530, 263917, 334724, 418405, 437060, 527834, 836810, 1055668, 1319585, 1673620, 2639170, 3430921, 5278340, 6861842, 13723684, 17154605, 34309210, 68618420]

約数ペア:

[(1, 68618420), (2, 34309210), (4, 17154605), (5, 13723684), (10, 6861842), (13, 5278340), (20, 3430921), (26, 2639170), (41, 1673620), (52, 1319585), (65, 1055668), (82, 836810), (130, 527834), (157, 437060), (164, 418405), (205, 334724), (260, 263917), (314, 218530), (410, 167362), (533, 128740), (628, 109265), (785, 87412), (820, 83681), (1066, 64370), (1570, 43706), (1681, 40820), (2041, 33620), (2132, 32185), (2665, 25748), (3140, 21853), (3362, 20410), (4082, 16810), (5330, 12874), (6437, 10660), (6724, 10205), (8164, 8405)]