21927087

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{653}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 39993408

約数和(自身を除く): 18066321

約数列:

[1, 3, 7, 9, 13, 21, 39, 41, 63, 91, 117, 123, 273, 287, 369, 533, 653, 819, 861, 1599, 1959, 2583, 3731, 4571, 4797, 5877, 8489, 11193, 13713, 25467, 26773, 33579, 41139, 59423, 76401, 80319, 178269, 187411, 240957, 348049, 534807, 562233, 1044147, 1686699, 2436343, 3132441, 7309029, 21927087]

約数ペア:

[(1, 21927087), (3, 7309029), (7, 3132441), (9, 2436343), (13, 1686699), (21, 1044147), (39, 562233), (41, 534807), (63, 348049), (91, 240957), (117, 187411), (123, 178269), (273, 80319), (287, 76401), (369, 59423), (533, 41139), (653, 33579), (819, 26773), (861, 25467), (1599, 13713), (1959, 11193), (2583, 8489), (3731, 5877), (4571, 4797)]