221775550

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:961

約数の個数: 48

約数和(自身を含む): 428544000

約数和(自身を除く): 206768450

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 155, 199, 310, 398, 719, 775, 995, 1438, 1550, 1990, 3595, 4975, 6169, 7190, 9950, 12338, 17975, 22289, 30845, 35950, 44578, 61690, 111445, 143081, 154225, 222890, 286162, 308450, 557225, 715405, 1114450, 1430810, 3577025, 4435511, 7154050, 8871022, 22177555, 44355110, 110887775, 221775550]

約数ペア:

[(1, 221775550), (2, 110887775), (5, 44355110), (10, 22177555), (25, 8871022), (31, 7154050), (50, 4435511), (62, 3577025), (155, 1430810), (199, 1114450), (310, 715405), (398, 557225), (719, 308450), (775, 286162), (995, 222890), (1438, 154225), (1550, 143081), (1990, 111445), (3595, 61690), (4975, 44578), (6169, 35950), (7190, 30845), (9950, 22289), (12338, 17975)]