217331940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{517457}}^1$

素因数の和:517476

約数の個数: 48

約数和(自身を含む): 695463552

約数和(自身を除く): 478131612

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, 517457, 1034914, 1552371, 2069828, 2587285, 3104742, 3622199, 5174570, 6209484, 7244398, 7761855, 10349140, 10866597, 14488796, 15523710, 18110995, 21733194, 31047420, 36221990, 43466388, 54332985, 72443980, 108665970, 217331940]

約数ペア:

[(1, 217331940), (2, 108665970), (3, 72443980), (4, 54332985), (5, 43466388), (6, 36221990), (7, 31047420), (10, 21733194), (12, 18110995), (14, 15523710), (15, 14488796), (20, 10866597), (21, 10349140), (28, 7761855), (30, 7244398), (35, 6209484), (42, 5174570), (60, 3622199), (70, 3104742), (84, 2587285), (105, 2069828), (140, 1552371), (210, 1034914), (420, 517457)]