18498340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1861}}^1$

素因数の和:1948

約数の個数: 48

約数和(自身を含む): 45045504

約数和(自身を除く): 26547164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1861, 1988, 2485, 3722, 4970, 7444, 9305, 9940, 13027, 18610, 26054, 37220, 52108, 65135, 130270, 132131, 260540, 264262, 528524, 660655, 924917, 1321310, 1849834, 2642620, 3699668, 4624585, 9249170, 18498340]

約数ペア:

[(1, 18498340), (2, 9249170), (4, 4624585), (5, 3699668), (7, 2642620), (10, 1849834), (14, 1321310), (20, 924917), (28, 660655), (35, 528524), (70, 264262), (71, 260540), (140, 132131), (142, 130270), (284, 65135), (355, 52108), (497, 37220), (710, 26054), (994, 18610), (1420, 13027), (1861, 9940), (1988, 9305), (2485, 7444), (3722, 4970)]