20417640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{229}}^1\times {\mathrm{743}}^1$

素因数の和:986

約数の個数: 64

約数和(自身を含む): 61603200

約数和(自身を除く): 41185560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 229, 458, 687, 743, 916, 1145, 1374, 1486, 1832, 2229, 2290, 2748, 2972, 3435, 3715, 4458, 4580, 5496, 5944, 6870, 7430, 8916, 9160, 11145, 13740, 14860, 17832, 22290, 27480, 29720, 44580, 89160, 170147, 340294, 510441, 680588, 850735, 1020882, 1361176, 1701470, 2041764, 2552205, 3402940, 4083528, 5104410, 6805880, 10208820, 20417640]

約数ペア:

[(1, 20417640), (2, 10208820), (3, 6805880), (4, 5104410), (5, 4083528), (6, 3402940), (8, 2552205), (10, 2041764), (12, 1701470), (15, 1361176), (20, 1020882), (24, 850735), (30, 680588), (40, 510441), (60, 340294), (120, 170147), (229, 89160), (458, 44580), (687, 29720), (743, 27480), (916, 22290), (1145, 17832), (1374, 14860), (1486, 13740), (1832, 11145), (2229, 9160), (2290, 8916), (2748, 7430), (2972, 6870), (3435, 5944), (3715, 5496), (4458, 4580)]