20011376

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{439}}^1$

素因数の和:502

約数の個数: 80

約数和(自身を含む): 49758720

約数和(自身を除く): 29747344

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 37, 44, 56, 74, 77, 88, 112, 148, 154, 176, 259, 296, 308, 407, 439, 518, 592, 616, 814, 878, 1036, 1232, 1628, 1756, 2072, 2849, 3073, 3256, 3512, 4144, 4829, 5698, 6146, 6512, 7024, 9658, 11396, 12292, 16243, 19316, 22792, 24584, 32486, 33803, 38632, 45584, 49168, 64972, 67606, 77264, 113701, 129944, 135212, 178673, 227402, 259888, 270424, 357346, 454804, 540848, 714692, 909608, 1250711, 1429384, 1819216, 2501422, 2858768, 5002844, 10005688, 20011376]

約数ペア:

[(1, 20011376), (2, 10005688), (4, 5002844), (7, 2858768), (8, 2501422), (11, 1819216), (14, 1429384), (16, 1250711), (22, 909608), (28, 714692), (37, 540848), (44, 454804), (56, 357346), (74, 270424), (77, 259888), (88, 227402), (112, 178673), (148, 135212), (154, 129944), (176, 113701), (259, 77264), (296, 67606), (308, 64972), (407, 49168), (439, 45584), (518, 38632), (592, 33803), (616, 32486), (814, 24584), (878, 22792), (1036, 19316), (1232, 16243), (1628, 12292), (1756, 11396), (2072, 9658), (2849, 7024), (3073, 6512), (3256, 6146), (3512, 5698), (4144, 4829)]