20005700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1399}}^1$

素因数の和:1437

約数の個数: 72

約数和(自身を含む): 51038400

約数和(自身を除く): 31032700

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1399, 1430, 2798, 2860, 3575, 5596, 6995, 7150, 13990, 14300, 15389, 18187, 27980, 30778, 34975, 36374, 61556, 69950, 72748, 76945, 90935, 139900, 153890, 181870, 200057, 307780, 363740, 384725, 400114, 454675, 769450, 800228, 909350, 1000285, 1538900, 1818700, 2000570, 4001140, 5001425, 10002850, 20005700]

約数ペア:

[(1, 20005700), (2, 10002850), (4, 5001425), (5, 4001140), (10, 2000570), (11, 1818700), (13, 1538900), (20, 1000285), (22, 909350), (25, 800228), (26, 769450), (44, 454675), (50, 400114), (52, 384725), (55, 363740), (65, 307780), (100, 200057), (110, 181870), (130, 153890), (143, 139900), (220, 90935), (260, 76945), (275, 72748), (286, 69950), (325, 61556), (550, 36374), (572, 34975), (650, 30778), (715, 27980), (1100, 18187), (1300, 15389), (1399, 14300), (1430, 13990), (2798, 7150), (2860, 6995), (3575, 5596)]