18440920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{577}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 44945280

約数和(自身を除く): 26504360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 47, 68, 85, 94, 136, 170, 188, 235, 340, 376, 470, 577, 680, 799, 940, 1154, 1598, 1880, 2308, 2885, 3196, 3995, 4616, 5770, 6392, 7990, 9809, 11540, 15980, 19618, 23080, 27119, 31960, 39236, 49045, 54238, 78472, 98090, 108476, 135595, 196180, 216952, 271190, 392360, 461023, 542380, 922046, 1084760, 1844092, 2305115, 3688184, 4610230, 9220460, 18440920]

約数ペア:

[(1, 18440920), (2, 9220460), (4, 4610230), (5, 3688184), (8, 2305115), (10, 1844092), (17, 1084760), (20, 922046), (34, 542380), (40, 461023), (47, 392360), (68, 271190), (85, 216952), (94, 196180), (136, 135595), (170, 108476), (188, 98090), (235, 78472), (340, 54238), (376, 49045), (470, 39236), (577, 31960), (680, 27119), (799, 23080), (940, 19618), (1154, 15980), (1598, 11540), (1880, 9809), (2308, 7990), (2885, 6392), (3196, 5770), (3995, 4616)]