81367780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:529

約数の個数: 96

約数和(自身を含む): 200037600

約数和(自身を除く): 118669820

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 41, 52, 65, 68, 82, 85, 130, 164, 170, 205, 221, 260, 340, 410, 442, 449, 533, 697, 820, 884, 898, 1066, 1105, 1394, 1796, 2132, 2210, 2245, 2665, 2788, 3485, 4420, 4490, 5330, 5837, 6970, 7633, 8980, 9061, 10660, 11674, 13940, 15266, 18122, 18409, 23348, 29185, 30532, 36244, 36818, 38165, 45305, 58370, 73636, 76330, 90610, 92045, 99229, 116740, 152660, 181220, 184090, 198458, 239317, 312953, 368180, 396916, 478634, 496145, 625906, 957268, 992290, 1196585, 1251812, 1564765, 1984580, 2393170, 3129530, 4068389, 4786340, 6259060, 8136778, 16273556, 20341945, 40683890, 81367780]

約数ペア:

[(1, 81367780), (2, 40683890), (4, 20341945), (5, 16273556), (10, 8136778), (13, 6259060), (17, 4786340), (20, 4068389), (26, 3129530), (34, 2393170), (41, 1984580), (52, 1564765), (65, 1251812), (68, 1196585), (82, 992290), (85, 957268), (130, 625906), (164, 496145), (170, 478634), (205, 396916), (221, 368180), (260, 312953), (340, 239317), (410, 198458), (442, 184090), (449, 181220), (533, 152660), (697, 116740), (820, 99229), (884, 92045), (898, 90610), (1066, 76330), (1105, 73636), (1394, 58370), (1796, 45305), (2132, 38165), (2210, 36818), (2245, 36244), (2665, 30532), (2788, 29185), (3485, 23348), (4420, 18409), (4490, 18122), (5330, 15266), (5837, 13940), (6970, 11674), (7633, 10660), (8980, 9061)]