20705640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1583}}^1$

素因数の和:1706

約数の個数: 64

約数和(自身を含む): 62726400

約数和(自身を除く): 42020760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 109, 120, 218, 327, 436, 545, 654, 872, 1090, 1308, 1583, 1635, 2180, 2616, 3166, 3270, 4360, 4749, 6332, 6540, 7915, 9498, 12664, 13080, 15830, 18996, 23745, 31660, 37992, 47490, 63320, 94980, 172547, 189960, 345094, 517641, 690188, 862735, 1035282, 1380376, 1725470, 2070564, 2588205, 3450940, 4141128, 5176410, 6901880, 10352820, 20705640]

約数ペア:

[(1, 20705640), (2, 10352820), (3, 6901880), (4, 5176410), (5, 4141128), (6, 3450940), (8, 2588205), (10, 2070564), (12, 1725470), (15, 1380376), (20, 1035282), (24, 862735), (30, 690188), (40, 517641), (60, 345094), (109, 189960), (120, 172547), (218, 94980), (327, 63320), (436, 47490), (545, 37992), (654, 31660), (872, 23745), (1090, 18996), (1308, 15830), (1583, 13080), (1635, 12664), (2180, 9498), (2616, 7915), (3166, 6540), (3270, 6332), (4360, 4749)]