28883980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 62375040

約数和(自身を除く): 33491060

約数列:

[1, 2, 4, 5, 10, 20, 79, 101, 158, 181, 202, 316, 362, 395, 404, 505, 724, 790, 905, 1010, 1580, 1810, 2020, 3620, 7979, 14299, 15958, 18281, 28598, 31916, 36562, 39895, 57196, 71495, 73124, 79790, 91405, 142990, 159580, 182810, 285980, 365620, 1444199, 2888398, 5776796, 7220995, 14441990, 28883980]

約数ペア:

[(1, 28883980), (2, 14441990), (4, 7220995), (5, 5776796), (10, 2888398), (20, 1444199), (79, 365620), (101, 285980), (158, 182810), (181, 159580), (202, 142990), (316, 91405), (362, 79790), (395, 73124), (404, 71495), (505, 57196), (724, 39895), (790, 36562), (905, 31916), (1010, 28598), (1580, 18281), (1810, 15958), (2020, 14299), (3620, 7979)]