20530020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6983}}^1$

素因数の和:7009

約数の個数: 72

約数和(自身を含む): 66878784

約数和(自身を除く): 46348764

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6983, 13966, 20949, 27932, 34915, 41898, 48881, 69830, 83796, 97762, 104745, 139660, 146643, 195524, 209490, 244405, 293286, 342167, 418980, 488810, 586572, 684334, 733215, 977620, 1026501, 1368668, 1466430, 1710835, 2053002, 2932860, 3421670, 4106004, 5132505, 6843340, 10265010, 20530020]

約数ペア:

[(1, 20530020), (2, 10265010), (3, 6843340), (4, 5132505), (5, 4106004), (6, 3421670), (7, 2932860), (10, 2053002), (12, 1710835), (14, 1466430), (15, 1368668), (20, 1026501), (21, 977620), (28, 733215), (30, 684334), (35, 586572), (42, 488810), (49, 418980), (60, 342167), (70, 293286), (84, 244405), (98, 209490), (105, 195524), (140, 146643), (147, 139660), (196, 104745), (210, 97762), (245, 83796), (294, 69830), (420, 48881), (490, 41898), (588, 34915), (735, 27932), (980, 20949), (1470, 13966), (2940, 6983)]