257198240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{123653}}^1$

素因数の和:123681

約数の個数: 48

約数和(自身を含む): 654376968

約数和(自身を除く): 397178728

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 123653, 247306, 494612, 618265, 989224, 1236530, 1607489, 1978448, 2473060, 3214978, 3956896, 4946120, 6429956, 8037445, 9892240, 12859912, 16074890, 19784480, 25719824, 32149780, 51439648, 64299560, 128599120, 257198240]

約数ペア:

[(1, 257198240), (2, 128599120), (4, 64299560), (5, 51439648), (8, 32149780), (10, 25719824), (13, 19784480), (16, 16074890), (20, 12859912), (26, 9892240), (32, 8037445), (40, 6429956), (52, 4946120), (65, 3956896), (80, 3214978), (104, 2473060), (130, 1978448), (160, 1607489), (208, 1236530), (260, 989224), (416, 618265), (520, 494612), (1040, 247306), (2080, 123653)]