12996880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12497}}^1$

素因数の和:12523

約数の個数: 40

約数和(自身を含む): 32544792

約数和(自身を除く): 19547912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 12497, 24994, 49988, 62485, 99976, 124970, 162461, 199952, 249940, 324922, 499880, 649844, 812305, 999760, 1299688, 1624610, 2599376, 3249220, 6498440, 12996880]

約数ペア:

[(1, 12996880), (2, 6498440), (4, 3249220), (5, 2599376), (8, 1624610), (10, 1299688), (13, 999760), (16, 812305), (20, 649844), (26, 499880), (40, 324922), (52, 249940), (65, 199952), (80, 162461), (104, 124970), (130, 99976), (208, 62485), (260, 49988), (520, 24994), (1040, 12497)]