20297940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 62487936

約数和(自身を除く): 42189996

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 53, 60, 65, 78, 106, 130, 156, 159, 195, 212, 260, 265, 318, 390, 491, 530, 636, 689, 780, 795, 982, 1060, 1378, 1473, 1590, 1964, 2067, 2455, 2756, 2946, 3180, 3445, 4134, 4910, 5892, 6383, 6890, 7365, 8268, 9820, 10335, 12766, 13780, 14730, 19149, 20670, 25532, 26023, 29460, 31915, 38298, 41340, 52046, 63830, 76596, 78069, 95745, 104092, 127660, 130115, 156138, 191490, 260230, 312276, 338299, 382980, 390345, 520460, 676598, 780690, 1014897, 1353196, 1561380, 1691495, 2029794, 3382990, 4059588, 5074485, 6765980, 10148970, 20297940]

約数ペア:

[(1, 20297940), (2, 10148970), (3, 6765980), (4, 5074485), (5, 4059588), (6, 3382990), (10, 2029794), (12, 1691495), (13, 1561380), (15, 1353196), (20, 1014897), (26, 780690), (30, 676598), (39, 520460), (52, 390345), (53, 382980), (60, 338299), (65, 312276), (78, 260230), (106, 191490), (130, 156138), (156, 130115), (159, 127660), (195, 104092), (212, 95745), (260, 78069), (265, 76596), (318, 63830), (390, 52046), (491, 41340), (530, 38298), (636, 31915), (689, 29460), (780, 26023), (795, 25532), (982, 20670), (1060, 19149), (1378, 14730), (1473, 13780), (1590, 12766), (1964, 10335), (2067, 9820), (2455, 8268), (2756, 7365), (2946, 6890), (3180, 6383), (3445, 5892), (4134, 4910)]