19928870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3739}}^1$

素因数の和:3800

約数の個数: 32

約数和(自身を含む): 39584160

約数和(自身を除く): 19655290

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3739, 5330, 7478, 18695, 37390, 48607, 97214, 153299, 243035, 306598, 486070, 766495, 1532990, 1992887, 3985774, 9964435, 19928870]

約数ペア:

[(1, 19928870), (2, 9964435), (5, 3985774), (10, 1992887), (13, 1532990), (26, 766495), (41, 486070), (65, 306598), (82, 243035), (130, 153299), (205, 97214), (410, 48607), (533, 37390), (1066, 18695), (2665, 7478), (3739, 5330)]