21078630

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{491}}^1$

素因数の和:563

約数の個数: 80

約数和(自身を含む): 57865104

約数和(自身を除く): 36786474

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 53, 54, 81, 90, 106, 135, 159, 162, 265, 270, 318, 405, 477, 491, 530, 795, 810, 954, 982, 1431, 1473, 1590, 2385, 2455, 2862, 2946, 4293, 4419, 4770, 4910, 7155, 7365, 8586, 8838, 13257, 14310, 14730, 21465, 22095, 26023, 26514, 39771, 42930, 44190, 52046, 66285, 78069, 79542, 130115, 132570, 156138, 198855, 234207, 260230, 390345, 397710, 468414, 702621, 780690, 1171035, 1405242, 2107863, 2342070, 3513105, 4215726, 7026210, 10539315, 21078630]

約数ペア:

[(1, 21078630), (2, 10539315), (3, 7026210), (5, 4215726), (6, 3513105), (9, 2342070), (10, 2107863), (15, 1405242), (18, 1171035), (27, 780690), (30, 702621), (45, 468414), (53, 397710), (54, 390345), (81, 260230), (90, 234207), (106, 198855), (135, 156138), (159, 132570), (162, 130115), (265, 79542), (270, 78069), (318, 66285), (405, 52046), (477, 44190), (491, 42930), (530, 39771), (795, 26514), (810, 26023), (954, 22095), (982, 21465), (1431, 14730), (1473, 14310), (1590, 13257), (2385, 8838), (2455, 8586), (2862, 7365), (2946, 7155), (4293, 4910), (4419, 4770)]