420160020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1000381}}^1$

素因数の和:1000400

約数の個数: 48

約数和(自身を含む): 1344513408

約数和(自身を除く): 924353388

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, 1000381, 2000762, 3001143, 4001524, 5001905, 6002286, 7002667, 10003810, 12004572, 14005334, 15005715, 20007620, 21008001, 28010668, 30011430, 35013335, 42016002, 60022860, 70026670, 84032004, 105040005, 140053340, 210080010, 420160020]

約数ペア:

[(1, 420160020), (2, 210080010), (3, 140053340), (4, 105040005), (5, 84032004), (6, 70026670), (7, 60022860), (10, 42016002), (12, 35013335), (14, 30011430), (15, 28010668), (20, 21008001), (21, 20007620), (28, 15005715), (30, 14005334), (35, 12004572), (42, 10003810), (60, 7002667), (70, 6002286), (84, 5001905), (105, 4001524), (140, 3001143), (210, 2000762), (420, 1000381)]