81222760

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{30307}}^1$

素因数の和:30385

約数の個数: 32

約数和(自身を含む): 185484960

約数和(自身を除く): 104262200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 30307, 60614, 121228, 151535, 242456, 303070, 606140, 1212280, 2030569, 4061138, 8122276, 10152845, 16244552, 20305690, 40611380, 81222760]

約数ペア:

[(1, 81222760), (2, 40611380), (4, 20305690), (5, 16244552), (8, 10152845), (10, 8122276), (20, 4061138), (40, 2030569), (67, 1212280), (134, 606140), (268, 303070), (335, 242456), (536, 151535), (670, 121228), (1340, 60614), (2680, 30307)]