64856080

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{9109}}^1$

素因数の和:9211

約数の個数: 40

約数和(自身を含む): 152501400

約数和(自身を除く): 87645320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 9109, 18218, 36436, 45545, 72872, 91090, 145744, 182180, 364360, 728720, 810701, 1621402, 3242804, 4053505, 6485608, 8107010, 12971216, 16214020, 32428040, 64856080]

約数ペア:

[(1, 64856080), (2, 32428040), (4, 16214020), (5, 12971216), (8, 8107010), (10, 6485608), (16, 4053505), (20, 3242804), (40, 1621402), (80, 810701), (89, 728720), (178, 364360), (356, 182180), (445, 145744), (712, 91090), (890, 72872), (1424, 45545), (1780, 36436), (3560, 18218), (7120, 9109)]