21197418

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{809}}^1$

素因数の和:1222

約数の個数: 32

約数和(自身を含む): 46422720

約数和(自身を除く): 25225302

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 397, 794, 809, 1191, 1618, 2382, 2427, 4367, 4854, 8734, 8899, 13101, 17798, 26202, 26697, 53394, 321173, 642346, 963519, 1927038, 3532903, 7065806, 10598709, 21197418]

約数ペア:

[(1, 21197418), (2, 10598709), (3, 7065806), (6, 3532903), (11, 1927038), (22, 963519), (33, 642346), (66, 321173), (397, 53394), (794, 26697), (809, 26202), (1191, 17798), (1618, 13101), (2382, 8899), (2427, 8734), (4367, 4854)]