28072690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2081}}^1$

素因数の和:2178

約数の個数: 32

約数和(自身を含む): 53965440

約数和(自身を除く): 25892750

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 2081, 2698, 4162, 6745, 10405, 13490, 20810, 39539, 79078, 147751, 197695, 295502, 395390, 738755, 1477510, 2807269, 5614538, 14036345, 28072690]

約数ペア:

[(1, 28072690), (2, 14036345), (5, 5614538), (10, 2807269), (19, 1477510), (38, 738755), (71, 395390), (95, 295502), (142, 197695), (190, 147751), (355, 79078), (710, 39539), (1349, 20810), (2081, 13490), (2698, 10405), (4162, 6745)]