28978100

素因数分解:

$2^2\times 5^2\times {\mathrm{181}}^1\times {\mathrm{1601}}^1$

素因数の和:1796

約数の個数: 36

約数和(自身を含む): 63269388

約数和(自身を除く): 34291288

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 181, 362, 724, 905, 1601, 1810, 3202, 3620, 4525, 6404, 8005, 9050, 16010, 18100, 32020, 40025, 80050, 160100, 289781, 579562, 1159124, 1448905, 2897810, 5795620, 7244525, 14489050, 28978100]

約数ペア:

[(1, 28978100), (2, 14489050), (4, 7244525), (5, 5795620), (10, 2897810), (20, 1448905), (25, 1159124), (50, 579562), (100, 289781), (181, 160100), (362, 80050), (724, 40025), (905, 32020), (1601, 18100), (1810, 16010), (3202, 9050), (3620, 8005), (4525, 6404)]