21499530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55127}}^1$

素因数の和:55150

約数の個数: 32

約数和(自身を含む): 55569024

約数和(自身を除く): 34069494

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55127, 110254, 165381, 275635, 330762, 551270, 716651, 826905, 1433302, 1653810, 2149953, 3583255, 4299906, 7166510, 10749765, 21499530]

約数ペア:

[(1, 21499530), (2, 10749765), (3, 7166510), (5, 4299906), (6, 3583255), (10, 2149953), (13, 1653810), (15, 1433302), (26, 826905), (30, 716651), (39, 551270), (65, 330762), (78, 275635), (130, 165381), (195, 110254), (390, 55127)]