851560

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 1953000

約数和(自身を除く): 1101440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 349, 488, 610, 698, 1220, 1396, 1745, 2440, 2792, 3490, 6980, 13960, 21289, 42578, 85156, 106445, 170312, 212890, 425780, 851560]

約数ペア:

[(1, 851560), (2, 425780), (4, 212890), (5, 170312), (8, 106445), (10, 85156), (20, 42578), (40, 21289), (61, 13960), (122, 6980), (244, 3490), (305, 2792), (349, 2440), (488, 1745), (610, 1396), (698, 1220)]