20866020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{49681}}^1$

素因数の和:49700

約数の個数: 48

約数和(自身を含む): 66772608

約数和(自身を除く): 45906588

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, 49681, 99362, 149043, 198724, 248405, 298086, 347767, 496810, 596172, 695534, 745215, 993620, 1043301, 1391068, 1490430, 1738835, 2086602, 2980860, 3477670, 4173204, 5216505, 6955340, 10433010, 20866020]

約数ペア:

[(1, 20866020), (2, 10433010), (3, 6955340), (4, 5216505), (5, 4173204), (6, 3477670), (7, 2980860), (10, 2086602), (12, 1738835), (14, 1490430), (15, 1391068), (20, 1043301), (21, 993620), (28, 745215), (30, 695534), (35, 596172), (42, 496810), (60, 347767), (70, 298086), (84, 248405), (105, 198724), (140, 149043), (210, 99362), (420, 49681)]