15999520

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^2\times {\mathrm{277}}^1$

素因数の和:330

約数の個数: 72

約数和(自身を含む): 40037004

約数和(自身を除く): 24037484

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 277, 304, 361, 380, 554, 608, 722, 760, 1108, 1385, 1444, 1520, 1805, 2216, 2770, 2888, 3040, 3610, 4432, 5263, 5540, 5776, 7220, 8864, 10526, 11080, 11552, 14440, 21052, 22160, 26315, 28880, 42104, 44320, 52630, 57760, 84208, 99997, 105260, 168416, 199994, 210520, 399988, 421040, 499985, 799976, 842080, 999970, 1599952, 1999940, 3199904, 3999880, 7999760, 15999520]

約数ペア:

[(1, 15999520), (2, 7999760), (4, 3999880), (5, 3199904), (8, 1999940), (10, 1599952), (16, 999970), (19, 842080), (20, 799976), (32, 499985), (38, 421040), (40, 399988), (76, 210520), (80, 199994), (95, 168416), (152, 105260), (160, 99997), (190, 84208), (277, 57760), (304, 52630), (361, 44320), (380, 42104), (554, 28880), (608, 26315), (722, 22160), (760, 21052), (1108, 14440), (1385, 11552), (1444, 11080), (1520, 10526), (1805, 8864), (2216, 7220), (2770, 5776), (2888, 5540), (3040, 5263), (3610, 4432)]