21856790

素因数分解:

$2^1\times 5^1\times {\mathrm{313}}^1\times {\mathrm{6983}}^1$

素因数の和:7303

約数の個数: 16

約数和(自身を含む): 39473568

約数和(自身を除く): 17616778

約数列:

[1, 2, 5, 10, 313, 626, 1565, 3130, 6983, 13966, 34915, 69830, 2185679, 4371358, 10928395, 21856790]

約数ペア:

[(1, 21856790), (2, 10928395), (5, 4371358), (10, 2185679), (313, 69830), (626, 34915), (1565, 13966), (3130, 6983)]