90040880

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{18451}}^1$

素因数の和:18525

約数の個数: 40

約数和(自身を含む): 212788464

約数和(自身を除く): 122747584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 18451, 36902, 73804, 92255, 147608, 184510, 295216, 369020, 738040, 1125511, 1476080, 2251022, 4502044, 5627555, 9004088, 11255110, 18008176, 22510220, 45020440, 90040880]

約数ペア:

[(1, 90040880), (2, 45020440), (4, 22510220), (5, 18008176), (8, 11255110), (10, 9004088), (16, 5627555), (20, 4502044), (40, 2251022), (61, 1476080), (80, 1125511), (122, 738040), (244, 369020), (305, 295216), (488, 184510), (610, 147608), (976, 92255), (1220, 73804), (2440, 36902), (4880, 18451)]