21752570

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{431}}^1$

素因数の和:555

約数の個数: 48

約数和(自身を含む): 46096128

約数和(自身を除く): 24343558

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 103, 206, 245, 431, 490, 515, 721, 862, 1030, 1442, 2155, 3017, 3605, 4310, 5047, 6034, 7210, 10094, 15085, 21119, 25235, 30170, 42238, 44393, 50470, 88786, 105595, 211190, 221965, 310751, 443930, 621502, 1553755, 2175257, 3107510, 4350514, 10876285, 21752570]

約数ペア:

[(1, 21752570), (2, 10876285), (5, 4350514), (7, 3107510), (10, 2175257), (14, 1553755), (35, 621502), (49, 443930), (70, 310751), (98, 221965), (103, 211190), (206, 105595), (245, 88786), (431, 50470), (490, 44393), (515, 42238), (721, 30170), (862, 25235), (1030, 21119), (1442, 15085), (2155, 10094), (3017, 7210), (3605, 6034), (4310, 5047)]