389695760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{286541}}^1$

素因数の和:286571

約数の個数: 40

約数和(自身を含む): 959342616

約数和(自身を除く): 569646856

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 286541, 573082, 1146164, 1432705, 2292328, 2865410, 4584656, 4871197, 5730820, 9742394, 11461640, 19484788, 22923280, 24355985, 38969576, 48711970, 77939152, 97423940, 194847880, 389695760]

約数ペア:

[(1, 389695760), (2, 194847880), (4, 97423940), (5, 77939152), (8, 48711970), (10, 38969576), (16, 24355985), (17, 22923280), (20, 19484788), (34, 11461640), (40, 9742394), (68, 5730820), (80, 4871197), (85, 4584656), (136, 2865410), (170, 2292328), (272, 1432705), (340, 1146164), (680, 573082), (1360, 286541)]