213460420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{344291}}^1$

素因数の和:344331

約数の個数: 24

約数和(自身を含む): 462728448

約数和(自身を除く): 249268028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 344291, 688582, 1377164, 1721455, 3442910, 6885820, 10673021, 21346042, 42692084, 53365105, 106730210, 213460420]

約数ペア:

[(1, 213460420), (2, 106730210), (4, 53365105), (5, 42692084), (10, 21346042), (20, 10673021), (31, 6885820), (62, 3442910), (124, 1721455), (155, 1377164), (310, 688582), (620, 344291)]