20637180

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12739}}^1$

素因数の和:12760

約数の個数: 60

約数和(自身を含む): 64744680

約数和(自身を除く): 44107500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12739, 25478, 38217, 50956, 63695, 76434, 114651, 127390, 152868, 191085, 229302, 254780, 343953, 382170, 458604, 573255, 687906, 764340, 1031859, 1146510, 1375812, 1719765, 2063718, 2293020, 3439530, 4127436, 5159295, 6879060, 10318590, 20637180]

約数ペア:

[(1, 20637180), (2, 10318590), (3, 6879060), (4, 5159295), (5, 4127436), (6, 3439530), (9, 2293020), (10, 2063718), (12, 1719765), (15, 1375812), (18, 1146510), (20, 1031859), (27, 764340), (30, 687906), (36, 573255), (45, 458604), (54, 382170), (60, 343953), (81, 254780), (90, 229302), (108, 191085), (135, 152868), (162, 127390), (180, 114651), (270, 76434), (324, 63695), (405, 50956), (540, 38217), (810, 25478), (1620, 12739)]