20508040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73243}}^1$

素因数の和:73261

約数の個数: 32

約数和(自身を含む): 52735680

約数和(自身を除く): 32227640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 73243, 146486, 292972, 366215, 512701, 585944, 732430, 1025402, 1464860, 2050804, 2563505, 2929720, 4101608, 5127010, 10254020, 20508040]

約数ペア:

[(1, 20508040), (2, 10254020), (4, 5127010), (5, 4101608), (7, 2929720), (8, 2563505), (10, 2050804), (14, 1464860), (20, 1025402), (28, 732430), (35, 585944), (40, 512701), (56, 366215), (70, 292972), (140, 146486), (280, 73243)]