678590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1$

素因数の和:248

約数の個数: 32

約数和(自身を含む): 1382400

約数和(自身を除く): 703810

約数列:

[1, 2, 5, 10, 11, 22, 31, 55, 62, 110, 155, 199, 310, 341, 398, 682, 995, 1705, 1990, 2189, 3410, 4378, 6169, 10945, 12338, 21890, 30845, 61690, 67859, 135718, 339295, 678590]

約数ペア:

[(1, 678590), (2, 339295), (5, 135718), (10, 67859), (11, 61690), (22, 30845), (31, 21890), (55, 12338), (62, 10945), (110, 6169), (155, 4378), (199, 3410), (310, 2189), (341, 1990), (398, 1705), (682, 995)]