20390520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{367}}^1\times {\mathrm{463}}^1$

素因数の和:844

約数の個数: 64

約数和(自身を含む): 61470720

約数和(自身を除く): 41080200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 367, 463, 734, 926, 1101, 1389, 1468, 1835, 1852, 2202, 2315, 2778, 2936, 3670, 3704, 4404, 4630, 5505, 5556, 6945, 7340, 8808, 9260, 11010, 11112, 13890, 14680, 18520, 22020, 27780, 44040, 55560, 169921, 339842, 509763, 679684, 849605, 1019526, 1359368, 1699210, 2039052, 2548815, 3398420, 4078104, 5097630, 6796840, 10195260, 20390520]

約数ペア:

[(1, 20390520), (2, 10195260), (3, 6796840), (4, 5097630), (5, 4078104), (6, 3398420), (8, 2548815), (10, 2039052), (12, 1699210), (15, 1359368), (20, 1019526), (24, 849605), (30, 679684), (40, 509763), (60, 339842), (120, 169921), (367, 55560), (463, 44040), (734, 27780), (926, 22020), (1101, 18520), (1389, 14680), (1468, 13890), (1835, 11112), (1852, 11010), (2202, 9260), (2315, 8808), (2778, 7340), (2936, 6945), (3670, 5556), (3704, 5505), (4404, 4630)]