815240

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 1863000

約数和(自身を除く): 1047760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 229, 356, 445, 458, 712, 890, 916, 1145, 1780, 1832, 2290, 3560, 4580, 9160, 20381, 40762, 81524, 101905, 163048, 203810, 407620, 815240]

約数ペア:

[(1, 815240), (2, 407620), (4, 203810), (5, 163048), (8, 101905), (10, 81524), (20, 40762), (40, 20381), (89, 9160), (178, 4580), (229, 3560), (356, 2290), (445, 1832), (458, 1780), (712, 1145), (890, 916)]