28578680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54959}}^1$

素因数の和:54983

約数の個数: 32

約数和(自身を含む): 69249600

約数和(自身を除く): 40670920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54959, 109918, 219836, 274795, 439672, 549590, 714467, 1099180, 1428934, 2198360, 2857868, 3572335, 5715736, 7144670, 14289340, 28578680]

約数ペア:

[(1, 28578680), (2, 14289340), (4, 7144670), (5, 5715736), (8, 3572335), (10, 2857868), (13, 2198360), (20, 1428934), (26, 1099180), (40, 714467), (52, 549590), (65, 439672), (104, 274795), (130, 219836), (260, 109918), (520, 54959)]