1287798980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{215351}}^1$

素因数の和:215396

約数の個数: 48

約数和(自身を含む): 3039047424

約数和(自身を除く): 1751248444

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 5980, 215351, 430702, 861404, 1076755, 2153510, 2799563, 4307020, 4953073, 5599126, 9906146, 11198252, 13997815, 19812292, 24765365, 27995630, 49530730, 55991260, 64389949, 99061460, 128779898, 257559796, 321949745, 643899490, 1287798980]

約数ペア:

[(1, 1287798980), (2, 643899490), (4, 321949745), (5, 257559796), (10, 128779898), (13, 99061460), (20, 64389949), (23, 55991260), (26, 49530730), (46, 27995630), (52, 24765365), (65, 19812292), (92, 13997815), (115, 11198252), (130, 9906146), (230, 5599126), (260, 4953073), (299, 4307020), (460, 2799563), (598, 2153510), (1196, 1076755), (1495, 861404), (2990, 430702), (5980, 215351)]