21918904

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2857}}^1$

素因数の和:3007

約数の個数: 32

約数和(自身を含む): 47328480

約数和(自身を除く): 25409576

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2857, 3836, 5714, 7672, 11428, 19999, 22856, 39998, 79996, 159992, 391409, 782818, 1565636, 2739863, 3131272, 5479726, 10959452, 21918904]

約数ペア:

[(1, 21918904), (2, 10959452), (4, 5479726), (7, 3131272), (8, 2739863), (14, 1565636), (28, 782818), (56, 391409), (137, 159992), (274, 79996), (548, 39998), (959, 22856), (1096, 19999), (1918, 11428), (2857, 7672), (3836, 5714)]