219976720

素因数分解:

$2^4\times 5^1\times {\mathrm{2749709}}^1$

素因数の和:2749722

約数の個数: 20

約数和(自身を含む): 511446060

約数和(自身を除く): 291469340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2749709, 5499418, 10998836, 13748545, 21997672, 27497090, 43995344, 54994180, 109988360, 219976720]

約数ペア:

[(1, 219976720), (2, 109988360), (4, 54994180), (5, 43995344), (8, 27497090), (10, 21997672), (16, 13748545), (20, 10998836), (40, 5499418), (80, 2749709)]