8720660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1973}}^1$

素因数の和:2012

約数の個数: 48

約数和(自身を含む): 20892816

約数和(自身を除く): 12172156

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 1973, 2210, 3946, 4420, 7892, 9865, 19730, 25649, 33541, 39460, 51298, 67082, 102596, 128245, 134164, 167705, 256490, 335410, 436033, 512980, 670820, 872066, 1744132, 2180165, 4360330, 8720660]

約数ペア:

[(1, 8720660), (2, 4360330), (4, 2180165), (5, 1744132), (10, 872066), (13, 670820), (17, 512980), (20, 436033), (26, 335410), (34, 256490), (52, 167705), (65, 134164), (68, 128245), (85, 102596), (130, 67082), (170, 51298), (221, 39460), (260, 33541), (340, 25649), (442, 19730), (884, 9865), (1105, 7892), (1973, 4420), (2210, 3946)]