20802188

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21533812

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 149, 167, 209, 298, 334, 418, 596, 668, 836, 1639, 1837, 2831, 3173, 3278, 3674, 5662, 6346, 6556, 7348, 11324, 12692, 24883, 31141, 34903, 49766, 62282, 69806, 99532, 124564, 139612, 273713, 472777, 547426, 945554, 1094852, 1891108, 5200547, 10401094, 20802188]

約数ペア:

[(1, 20802188), (2, 10401094), (4, 5200547), (11, 1891108), (19, 1094852), (22, 945554), (38, 547426), (44, 472777), (76, 273713), (149, 139612), (167, 124564), (209, 99532), (298, 69806), (334, 62282), (418, 49766), (596, 34903), (668, 31141), (836, 24883), (1639, 12692), (1837, 11324), (2831, 7348), (3173, 6556), (3278, 6346), (3674, 5662)]