20997072

素因数分解:

$2^4\times 3^2\times {\mathrm{43}}^1\times {\mathrm{3391}}^1$

素因数の和:3448

約数の個数: 60

約数和(自身を含む): 60146944

約数和(自身を除く): 39149872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 43, 48, 72, 86, 129, 144, 172, 258, 344, 387, 516, 688, 774, 1032, 1548, 2064, 3096, 3391, 6192, 6782, 10173, 13564, 20346, 27128, 30519, 40692, 54256, 61038, 81384, 122076, 145813, 162768, 244152, 291626, 437439, 488304, 583252, 874878, 1166504, 1312317, 1749756, 2333008, 2624634, 3499512, 5249268, 6999024, 10498536, 20997072]

約数ペア:

[(1, 20997072), (2, 10498536), (3, 6999024), (4, 5249268), (6, 3499512), (8, 2624634), (9, 2333008), (12, 1749756), (16, 1312317), (18, 1166504), (24, 874878), (36, 583252), (43, 488304), (48, 437439), (72, 291626), (86, 244152), (129, 162768), (144, 145813), (172, 122076), (258, 81384), (344, 61038), (387, 54256), (516, 40692), (688, 30519), (774, 27128), (1032, 20346), (1548, 13564), (2064, 10173), (3096, 6782), (3391, 6192)]