16209680

素因数分解:

$2^4\times 5^1\times {\mathrm{202621}}^1$

素因数の和:202634

約数の個数: 20

約数和(自身を含む): 37687692

約数和(自身を除く): 21478012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 202621, 405242, 810484, 1013105, 1620968, 2026210, 3241936, 4052420, 8104840, 16209680]

約数ペア:

[(1, 16209680), (2, 8104840), (4, 4052420), (5, 3241936), (8, 2026210), (10, 1620968), (16, 1013105), (20, 810484), (40, 405242), (80, 202621)]