639131880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{280321}}^1$

素因数の和:280354

約数の個数: 64

約数和(自身を含む): 2018318400

約数和(自身を除く): 1379186520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 280321, 560642, 840963, 1121284, 1401605, 1681926, 2242568, 2803210, 3363852, 4204815, 5326099, 5606420, 6727704, 8409630, 10652198, 11212840, 15978297, 16819260, 21304396, 26630495, 31956594, 33638520, 42608792, 53260990, 63913188, 79891485, 106521980, 127826376, 159782970, 213043960, 319565940, 639131880]

約数ペア:

[(1, 639131880), (2, 319565940), (3, 213043960), (4, 159782970), (5, 127826376), (6, 106521980), (8, 79891485), (10, 63913188), (12, 53260990), (15, 42608792), (19, 33638520), (20, 31956594), (24, 26630495), (30, 21304396), (38, 16819260), (40, 15978297), (57, 11212840), (60, 10652198), (76, 8409630), (95, 6727704), (114, 5606420), (120, 5326099), (152, 4204815), (190, 3363852), (228, 2803210), (285, 2242568), (380, 1681926), (456, 1401605), (570, 1121284), (760, 840963), (1140, 560642), (2280, 280321)]