39751220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 85612800

約数和(自身を除く): 45861580

約数列:

[1, 2, 4, 5, 10, 20, 79, 139, 158, 181, 278, 316, 362, 395, 556, 695, 724, 790, 905, 1390, 1580, 1810, 2780, 3620, 10981, 14299, 21962, 25159, 28598, 43924, 50318, 54905, 57196, 71495, 100636, 109810, 125795, 142990, 219620, 251590, 285980, 503180, 1987561, 3975122, 7950244, 9937805, 19875610, 39751220]

約数ペア:

[(1, 39751220), (2, 19875610), (4, 9937805), (5, 7950244), (10, 3975122), (20, 1987561), (79, 503180), (139, 285980), (158, 251590), (181, 219620), (278, 142990), (316, 125795), (362, 109810), (395, 100636), (556, 71495), (695, 57196), (724, 54905), (790, 50318), (905, 43924), (1390, 28598), (1580, 25159), (1810, 21962), (2780, 14299), (3620, 10981)]