820316120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1577531}}^1$

素因数の和:1577555

約数の個数: 32

約数和(自身を含む): 1987690320

約数和(自身を除く): 1167374200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1577531, 3155062, 6310124, 7887655, 12620248, 15775310, 20507903, 31550620, 41015806, 63101240, 82031612, 102539515, 164063224, 205079030, 410158060, 820316120]

約数ペア:

[(1, 820316120), (2, 410158060), (4, 205079030), (5, 164063224), (8, 102539515), (10, 82031612), (13, 63101240), (20, 41015806), (26, 31550620), (40, 20507903), (52, 15775310), (65, 12620248), (104, 7887655), (130, 6310124), (260, 3155062), (520, 1577531)]