65931280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20101}}^1$

素因数の和:20155

約数の個数: 40

約数和(自身を含む): 157036824

約数和(自身を除く): 91105544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20101, 40202, 80404, 100505, 160808, 201010, 321616, 402020, 804040, 824141, 1608080, 1648282, 3296564, 4120705, 6593128, 8241410, 13186256, 16482820, 32965640, 65931280]

約数ペア:

[(1, 65931280), (2, 32965640), (4, 16482820), (5, 13186256), (8, 8241410), (10, 6593128), (16, 4120705), (20, 3296564), (40, 1648282), (41, 1608080), (80, 824141), (82, 804040), (164, 402020), (205, 321616), (328, 201010), (410, 160808), (656, 100505), (820, 80404), (1640, 40202), (3280, 20101)]