20778480

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28859}}^1$

素因数の和:28878

約数の個数: 60

約数和(自身を含む): 69783480

約数和(自身を除く): 49005000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28859, 57718, 86577, 115436, 144295, 173154, 230872, 259731, 288590, 346308, 432885, 461744, 519462, 577180, 692616, 865770, 1038924, 1154360, 1298655, 1385232, 1731540, 2077848, 2308720, 2597310, 3463080, 4155696, 5194620, 6926160, 10389240, 20778480]

約数ペア:

[(1, 20778480), (2, 10389240), (3, 6926160), (4, 5194620), (5, 4155696), (6, 3463080), (8, 2597310), (9, 2308720), (10, 2077848), (12, 1731540), (15, 1385232), (16, 1298655), (18, 1154360), (20, 1038924), (24, 865770), (30, 692616), (36, 577180), (40, 519462), (45, 461744), (48, 432885), (60, 346308), (72, 288590), (80, 259731), (90, 230872), (120, 173154), (144, 144295), (180, 115436), (240, 86577), (360, 57718), (720, 28859)]