18999278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{13513}}^1$

素因数の和:13571

約数の個数: 16

約数和(自身を含む): 30811920

約数和(自身を除く): 11812642

約数列:

[1, 2, 19, 37, 38, 74, 703, 1406, 13513, 27026, 256747, 499981, 513494, 999962, 9499639, 18999278]

約数ペア:

[(1, 18999278), (2, 9499639), (19, 999962), (37, 513494), (38, 499981), (74, 256747), (703, 27026), (1406, 13513)]