215445720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{256483}}^1$

素因数の和:256504

約数の個数: 64

約数和(自身を含む): 738673920

約数和(自身を除く): 523228200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 256483, 512966, 769449, 1025932, 1282415, 1538898, 1795381, 2051864, 2564830, 3077796, 3590762, 3847245, 5129660, 5386143, 6155592, 7181524, 7694490, 8976905, 10259320, 10772286, 14363048, 15388980, 17953810, 21544572, 26930715, 30777960, 35907620, 43089144, 53861430, 71815240, 107722860, 215445720]

約数ペア:

[(1, 215445720), (2, 107722860), (3, 71815240), (4, 53861430), (5, 43089144), (6, 35907620), (7, 30777960), (8, 26930715), (10, 21544572), (12, 17953810), (14, 15388980), (15, 14363048), (20, 10772286), (21, 10259320), (24, 8976905), (28, 7694490), (30, 7181524), (35, 6155592), (40, 5386143), (42, 5129660), (56, 3847245), (60, 3590762), (70, 3077796), (84, 2564830), (105, 2051864), (120, 1795381), (140, 1538898), (168, 1282415), (210, 1025932), (280, 769449), (420, 512966), (840, 256483)]