19631440

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1163}}^1$

素因数の和:1387

約数の個数: 40

約数和(自身を含む): 45898848

約数和(自身を除く): 26267408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1163, 1688, 2110, 2326, 3376, 4220, 4652, 5815, 8440, 9304, 11630, 16880, 18608, 23260, 46520, 93040, 245393, 490786, 981572, 1226965, 1963144, 2453930, 3926288, 4907860, 9815720, 19631440]

約数ペア:

[(1, 19631440), (2, 9815720), (4, 4907860), (5, 3926288), (8, 2453930), (10, 1963144), (16, 1226965), (20, 981572), (40, 490786), (80, 245393), (211, 93040), (422, 46520), (844, 23260), (1055, 18608), (1163, 16880), (1688, 11630), (2110, 9304), (2326, 8440), (3376, 5815), (4220, 4652)]