21312864

素因数分解:

$2^5\times 3^2\times {\mathrm{43}}^1\times {\mathrm{1721}}^1$

素因数の和:1780

約数の個数: 72

約数和(自身を含む): 62053992

約数和(自身を除く): 40741128

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 43, 48, 72, 86, 96, 129, 144, 172, 258, 288, 344, 387, 516, 688, 774, 1032, 1376, 1548, 1721, 2064, 3096, 3442, 4128, 5163, 6192, 6884, 10326, 12384, 13768, 15489, 20652, 27536, 30978, 41304, 55072, 61956, 74003, 82608, 123912, 148006, 165216, 222009, 247824, 296012, 444018, 495648, 592024, 666027, 888036, 1184048, 1332054, 1776072, 2368096, 2664108, 3552144, 5328216, 7104288, 10656432, 21312864]

約数ペア:

[(1, 21312864), (2, 10656432), (3, 7104288), (4, 5328216), (6, 3552144), (8, 2664108), (9, 2368096), (12, 1776072), (16, 1332054), (18, 1184048), (24, 888036), (32, 666027), (36, 592024), (43, 495648), (48, 444018), (72, 296012), (86, 247824), (96, 222009), (129, 165216), (144, 148006), (172, 123912), (258, 82608), (288, 74003), (344, 61956), (387, 55072), (516, 41304), (688, 30978), (774, 27536), (1032, 20652), (1376, 15489), (1548, 13768), (1721, 12384), (2064, 10326), (3096, 6884), (3442, 6192), (4128, 5163)]