247315960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{101359}}^1$

素因数の和:101431

約数の個数: 32

約数和(自身を含む): 565588800

約数和(自身を除く): 318272840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 101359, 202718, 405436, 506795, 810872, 1013590, 2027180, 4054360, 6182899, 12365798, 24731596, 30914495, 49463192, 61828990, 123657980, 247315960]

約数ペア:

[(1, 247315960), (2, 123657980), (4, 61828990), (5, 49463192), (8, 30914495), (10, 24731596), (20, 12365798), (40, 6182899), (61, 4054360), (122, 2027180), (244, 1013590), (305, 810872), (488, 506795), (610, 405436), (1220, 202718), (2440, 101359)]