21509530928

素因数分解:

$2^4\times {\mathrm{401}}^1\times {\mathrm{3352483}}^1$

素因数の和:3352892

約数の個数: 20

約数和(自身を含む): 41778655608

約数和(自身を除く): 20269124680

約数列:

[1, 2, 4, 8, 16, 401, 802, 1604, 3208, 6416, 3352483, 6704966, 13409932, 26819864, 53639728, 1344345683, 2688691366, 5377382732, 10754765464, 21509530928]

約数ペア:

[(1, 21509530928), (2, 10754765464), (4, 5377382732), (8, 2688691366), (16, 1344345683), (401, 53639728), (802, 26819864), (1604, 13409932), (3208, 6704966), (6416, 3352483)]