397408040

素因数分解:

$2^3\times 5^1\times {\mathrm{857}}^1\times {\mathrm{11593}}^1$

素因数の和:12461

約数の個数: 32

約数和(自身を含む): 895288680

約数和(自身を除く): 497880640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 857, 1714, 3428, 4285, 6856, 8570, 11593, 17140, 23186, 34280, 46372, 57965, 92744, 115930, 231860, 463720, 9935201, 19870402, 39740804, 49676005, 79481608, 99352010, 198704020, 397408040]

約数ペア:

[(1, 397408040), (2, 198704020), (4, 99352010), (5, 79481608), (8, 49676005), (10, 39740804), (20, 19870402), (40, 9935201), (857, 463720), (1714, 231860), (3428, 115930), (4285, 92744), (6856, 57965), (8570, 46372), (11593, 34280), (17140, 23186)]