20981738

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{14923}}^1$

素因数の和:14981

約数の個数: 16

約数和(自身を含む): 34026720

約数和(自身を除く): 13044982

約数列:

[1, 2, 19, 37, 38, 74, 703, 1406, 14923, 29846, 283537, 552151, 567074, 1104302, 10490869, 20981738]

約数ペア:

[(1, 20981738), (2, 10490869), (19, 1104302), (37, 567074), (38, 552151), (74, 283537), (703, 29846), (1406, 14923)]