20608020

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12721}}^1$

素因数の和:12742

約数の個数: 60

約数和(自身を含む): 64653204

約数和(自身を除く): 44045184

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, 12721, 25442, 38163, 50884, 63605, 76326, 114489, 127210, 152652, 190815, 228978, 254420, 343467, 381630, 457956, 572445, 686934, 763260, 1030401, 1144890, 1373868, 1717335, 2060802, 2289780, 3434670, 4121604, 5152005, 6869340, 10304010, 20608020]

約数ペア:

[(1, 20608020), (2, 10304010), (3, 6869340), (4, 5152005), (5, 4121604), (6, 3434670), (9, 2289780), (10, 2060802), (12, 1717335), (15, 1373868), (18, 1144890), (20, 1030401), (27, 763260), (30, 686934), (36, 572445), (45, 457956), (54, 381630), (60, 343467), (81, 254420), (90, 228978), (108, 190815), (135, 152652), (162, 127210), (180, 114489), (270, 76326), (324, 63605), (405, 50884), (540, 38163), (810, 25442), (1620, 12721)]