20565762040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{8428591}}^1$

素因数の和:8428663

約数の個数: 32

約数和(自身を含む): 47031543360

約数和(自身を除く): 26465781320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 8428591, 16857182, 33714364, 42142955, 67428728, 84285910, 168571820, 337143640, 514144051, 1028288102, 2056576204, 2570720255, 4113152408, 5141440510, 10282881020, 20565762040]

約数ペア:

[(1, 20565762040), (2, 10282881020), (4, 5141440510), (5, 4113152408), (8, 2570720255), (10, 2056576204), (20, 1028288102), (40, 514144051), (61, 337143640), (122, 168571820), (244, 84285910), (305, 67428728), (488, 42142955), (610, 33714364), (1220, 16857182), (2440, 8428591)]