402100020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{319127}}^1$

素因数の和:319149

約数の個数: 72

約数和(自身を含む): 1393951104

約数和(自身を除く): 991851084

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, 319127, 638254, 957381, 1276508, 1595635, 1914762, 2233889, 2872143, 3191270, 3829524, 4467778, 4786905, 5744286, 6382540, 6701667, 8935556, 9573810, 11169445, 11488572, 13403334, 14360715, 19147620, 20105001, 22338890, 26806668, 28721430, 33508335, 40210002, 44677780, 57442860, 67016670, 80420004, 100525005, 134033340, 201050010, 402100020]

約数ペア:

[(1, 402100020), (2, 201050010), (3, 134033340), (4, 100525005), (5, 80420004), (6, 67016670), (7, 57442860), (9, 44677780), (10, 40210002), (12, 33508335), (14, 28721430), (15, 26806668), (18, 22338890), (20, 20105001), (21, 19147620), (28, 14360715), (30, 13403334), (35, 11488572), (36, 11169445), (42, 9573810), (45, 8935556), (60, 6701667), (63, 6382540), (70, 5744286), (84, 4786905), (90, 4467778), (105, 3829524), (126, 3191270), (140, 2872143), (180, 2233889), (210, 1914762), (252, 1595635), (315, 1276508), (420, 957381), (630, 638254), (1260, 319127)]