28490540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109579}}^1$

素因数の和:109601

約数の個数: 24

約数和(自身を含む): 64433040

約数和(自身を除く): 35942500

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109579, 219158, 438316, 547895, 1095790, 1424527, 2191580, 2849054, 5698108, 7122635, 14245270, 28490540]

約数ペア:

[(1, 28490540), (2, 14245270), (4, 7122635), (5, 5698108), (10, 2849054), (13, 2191580), (20, 1424527), (26, 1095790), (52, 547895), (65, 438316), (130, 219158), (260, 109579)]