256755760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{188791}}^1$

素因数の和:188821

約数の個数: 40

約数和(自身を含む): 632075616

約数和(自身を除く): 375319856

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 188791, 377582, 755164, 943955, 1510328, 1887910, 3020656, 3209447, 3775820, 6418894, 7551640, 12837788, 15103280, 16047235, 25675576, 32094470, 51351152, 64188940, 128377880, 256755760]

約数ペア:

[(1, 256755760), (2, 128377880), (4, 64188940), (5, 51351152), (8, 32094470), (10, 25675576), (16, 16047235), (17, 15103280), (20, 12837788), (34, 7551640), (40, 6418894), (68, 3775820), (80, 3209447), (85, 3020656), (136, 1887910), (170, 1510328), (272, 943955), (340, 755164), (680, 377582), (1360, 188791)]