13481480

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 31726080

約数和(自身を除く): 18244600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 101, 142, 188, 202, 235, 284, 355, 376, 404, 470, 505, 568, 710, 808, 940, 1010, 1420, 1880, 2020, 2840, 3337, 4040, 4747, 6674, 7171, 9494, 13348, 14342, 16685, 18988, 23735, 26696, 28684, 33370, 35855, 37976, 47470, 57368, 66740, 71710, 94940, 133480, 143420, 189880, 286840, 337037, 674074, 1348148, 1685185, 2696296, 3370370, 6740740, 13481480]

約数ペア:

[(1, 13481480), (2, 6740740), (4, 3370370), (5, 2696296), (8, 1685185), (10, 1348148), (20, 674074), (40, 337037), (47, 286840), (71, 189880), (94, 143420), (101, 133480), (142, 94940), (188, 71710), (202, 66740), (235, 57368), (284, 47470), (355, 37976), (376, 35855), (404, 33370), (470, 28684), (505, 26696), (568, 23735), (710, 18988), (808, 16685), (940, 14342), (1010, 13348), (1420, 9494), (1880, 7171), (2020, 6674), (2840, 4747), (3337, 4040)]