61789880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21757}}^1$

素因数の和:21839

約数の個数: 32

約数和(自身を含む): 140991840

約数和(自身を除く): 79201960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 21757, 43514, 87028, 108785, 174056, 217570, 435140, 870280, 1544747, 3089494, 6178988, 7723735, 12357976, 15447470, 30894940, 61789880]

約数ペア:

[(1, 61789880), (2, 30894940), (4, 15447470), (5, 12357976), (8, 7723735), (10, 6178988), (20, 3089494), (40, 1544747), (71, 870280), (142, 435140), (284, 217570), (355, 174056), (568, 108785), (710, 87028), (1420, 43514), (2840, 21757)]