18474760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{317}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 43960320

約数和(自身を除く): 25485560

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 47, 62, 94, 124, 155, 188, 235, 248, 310, 317, 376, 470, 620, 634, 940, 1240, 1268, 1457, 1585, 1880, 2536, 2914, 3170, 5828, 6340, 7285, 9827, 11656, 12680, 14570, 14899, 19654, 29140, 29798, 39308, 49135, 58280, 59596, 74495, 78616, 98270, 119192, 148990, 196540, 297980, 393080, 461869, 595960, 923738, 1847476, 2309345, 3694952, 4618690, 9237380, 18474760]

約数ペア:

[(1, 18474760), (2, 9237380), (4, 4618690), (5, 3694952), (8, 2309345), (10, 1847476), (20, 923738), (31, 595960), (40, 461869), (47, 393080), (62, 297980), (94, 196540), (124, 148990), (155, 119192), (188, 98270), (235, 78616), (248, 74495), (310, 59596), (317, 58280), (376, 49135), (470, 39308), (620, 29798), (634, 29140), (940, 19654), (1240, 14899), (1268, 14570), (1457, 12680), (1585, 11656), (1880, 9827), (2536, 7285), (2914, 6340), (3170, 5828)]