18894458

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{19973}}^1$

素因数の和:20029

約数の個数: 16

約数和(自身を含む): 31638816

約数和(自身を除く): 12744358

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 19973, 39946, 219703, 439406, 858839, 1717678, 9447229, 18894458]

約数ペア:

[(1, 18894458), (2, 9447229), (11, 1717678), (22, 858839), (43, 439406), (86, 219703), (473, 39946), (946, 19973)]