218522220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{520291}}^1$

素因数の和:520310

約数の個数: 48

約数和(自身を含む): 699272448

約数和(自身を除く): 480750228

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 520291, 1040582, 1560873, 2081164, 2601455, 3121746, 3642037, 5202910, 6243492, 7284074, 7804365, 10405820, 10926111, 14568148, 15608730, 18210185, 21852222, 31217460, 36420370, 43704444, 54630555, 72840740, 109261110, 218522220]

約数ペア:

[(1, 218522220), (2, 109261110), (3, 72840740), (4, 54630555), (5, 43704444), (6, 36420370), (7, 31217460), (10, 21852222), (12, 18210185), (14, 15608730), (15, 14568148), (20, 10926111), (21, 10405820), (28, 7804365), (30, 7284074), (35, 6243492), (42, 5202910), (60, 3642037), (70, 3121746), (84, 2601455), (105, 2081164), (140, 1560873), (210, 1040582), (420, 520291)]