81535120

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4229}}^1$

素因数の和:4483

約数の個数: 40

約数和(自身を含む): 190400760

約数和(自身を除く): 108865640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4229, 4820, 8458, 9640, 16916, 19280, 21145, 33832, 42290, 67664, 84580, 169160, 338320, 1019189, 2038378, 4076756, 5095945, 8153512, 10191890, 16307024, 20383780, 40767560, 81535120]

約数ペア:

[(1, 81535120), (2, 40767560), (4, 20383780), (5, 16307024), (8, 10191890), (10, 8153512), (16, 5095945), (20, 4076756), (40, 2038378), (80, 1019189), (241, 338320), (482, 169160), (964, 84580), (1205, 67664), (1928, 42290), (2410, 33832), (3856, 21145), (4229, 19280), (4820, 16916), (8458, 9640)]