811687760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{780469}}^1$

素因数の和:780495

約数の個数: 40

約数和(自身を含む): 2032343880

約数和(自身を除く): 1220656120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 780469, 1560938, 3121876, 3902345, 6243752, 7804690, 10146097, 12487504, 15609380, 20292194, 31218760, 40584388, 50730485, 62437520, 81168776, 101460970, 162337552, 202921940, 405843880, 811687760]

約数ペア:

[(1, 811687760), (2, 405843880), (4, 202921940), (5, 162337552), (8, 101460970), (10, 81168776), (13, 62437520), (16, 50730485), (20, 40584388), (26, 31218760), (40, 20292194), (52, 15609380), (65, 12487504), (80, 10146097), (104, 7804690), (130, 6243752), (208, 3902345), (260, 3121876), (520, 1560938), (1040, 780469)]