428420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:731

約数の個数: 24

約数和(自身を含む): 930048

約数和(自身を除く): 501628

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 691, 1382, 2764, 3455, 6910, 13820, 21421, 42842, 85684, 107105, 214210, 428420]

約数ペア:

[(1, 428420), (2, 214210), (4, 107105), (5, 85684), (10, 42842), (20, 21421), (31, 13820), (62, 6910), (124, 3455), (155, 2764), (310, 1382), (620, 691)]