81510620

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{2243}}^1$

素因数の和:2354

約数の個数: 48

約数和(自身を含む): 180956160

約数和(自身を除く): 99445540

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 79, 92, 115, 158, 230, 316, 395, 460, 790, 1580, 1817, 2243, 3634, 4486, 7268, 8972, 9085, 11215, 18170, 22430, 36340, 44860, 51589, 103178, 177197, 206356, 257945, 354394, 515890, 708788, 885985, 1031780, 1771970, 3543940, 4075531, 8151062, 16302124, 20377655, 40755310, 81510620]

約数ペア:

[(1, 81510620), (2, 40755310), (4, 20377655), (5, 16302124), (10, 8151062), (20, 4075531), (23, 3543940), (46, 1771970), (79, 1031780), (92, 885985), (115, 708788), (158, 515890), (230, 354394), (316, 257945), (395, 206356), (460, 177197), (790, 103178), (1580, 51589), (1817, 44860), (2243, 36340), (3634, 22430), (4486, 18170), (7268, 11215), (8972, 9085)]