257741820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{204557}}^1$

素因数の和:204579

約数の個数: 72

約数和(自身を含む): 893509344

約数和(自身を除く): 635767524

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 204557, 409114, 613671, 818228, 1022785, 1227342, 1431899, 1841013, 2045570, 2454684, 2863798, 3068355, 3682026, 4091140, 4295697, 5727596, 6136710, 7159495, 7364052, 8591394, 9205065, 12273420, 12887091, 14318990, 17182788, 18410130, 21478485, 25774182, 28637980, 36820260, 42956970, 51548364, 64435455, 85913940, 128870910, 257741820]

約数ペア:

[(1, 257741820), (2, 128870910), (3, 85913940), (4, 64435455), (5, 51548364), (6, 42956970), (7, 36820260), (9, 28637980), (10, 25774182), (12, 21478485), (14, 18410130), (15, 17182788), (18, 14318990), (20, 12887091), (21, 12273420), (28, 9205065), (30, 8591394), (35, 7364052), (36, 7159495), (42, 6136710), (45, 5727596), (60, 4295697), (63, 4091140), (70, 3682026), (84, 3068355), (90, 2863798), (105, 2454684), (126, 2045570), (140, 1841013), (180, 1431899), (210, 1227342), (252, 1022785), (315, 818228), (420, 613671), (630, 409114), (1260, 204557)]