155555820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{123457}}^1$

素因数の和:123479

約数の個数: 72

約数和(自身を含む): 539264544

約数和(自身を除く): 383708724

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, 123457, 246914, 370371, 493828, 617285, 740742, 864199, 1111113, 1234570, 1481484, 1728398, 1851855, 2222226, 2469140, 2592597, 3456796, 3703710, 4320995, 4444452, 5185194, 5555565, 7407420, 7777791, 8641990, 10370388, 11111130, 12962985, 15555582, 17283980, 22222260, 25925970, 31111164, 38888955, 51851940, 77777910, 155555820]

約数ペア:

[(1, 155555820), (2, 77777910), (3, 51851940), (4, 38888955), (5, 31111164), (6, 25925970), (7, 22222260), (9, 17283980), (10, 15555582), (12, 12962985), (14, 11111130), (15, 10370388), (18, 8641990), (20, 7777791), (21, 7407420), (28, 5555565), (30, 5185194), (35, 4444452), (36, 4320995), (42, 3703710), (45, 3456796), (60, 2592597), (63, 2469140), (70, 2222226), (84, 1851855), (90, 1728398), (105, 1481484), (126, 1234570), (140, 1111113), (180, 864199), (210, 740742), (252, 617285), (315, 493828), (420, 370371), (630, 246914), (1260, 123457)]