18216880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:314

約数の個数: 80

約数和(自身を含む): 46854144

約数和(自身を除く): 28637264

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 127, 163, 176, 220, 254, 326, 440, 508, 635, 652, 815, 880, 1016, 1270, 1304, 1397, 1630, 1793, 2032, 2540, 2608, 2794, 3260, 3586, 5080, 5588, 6520, 6985, 7172, 8965, 10160, 11176, 13040, 13970, 14344, 17930, 20701, 22352, 27940, 28688, 35860, 41402, 55880, 71720, 82804, 103505, 111760, 143440, 165608, 207010, 227711, 331216, 414020, 455422, 828040, 910844, 1138555, 1656080, 1821688, 2277110, 3643376, 4554220, 9108440, 18216880]

約数ペア:

[(1, 18216880), (2, 9108440), (4, 4554220), (5, 3643376), (8, 2277110), (10, 1821688), (11, 1656080), (16, 1138555), (20, 910844), (22, 828040), (40, 455422), (44, 414020), (55, 331216), (80, 227711), (88, 207010), (110, 165608), (127, 143440), (163, 111760), (176, 103505), (220, 82804), (254, 71720), (326, 55880), (440, 41402), (508, 35860), (635, 28688), (652, 27940), (815, 22352), (880, 20701), (1016, 17930), (1270, 14344), (1304, 13970), (1397, 13040), (1630, 11176), (1793, 10160), (2032, 8965), (2540, 7172), (2608, 6985), (2794, 6520), (3260, 5588), (3586, 5080)]