21212178

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{1801}}^1$

素因数の和:1970

約数の個数: 32

約数和(自身を含む): 46015872

約数和(自身を除く): 24803694

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 151, 302, 453, 906, 1801, 1963, 3602, 3926, 5403, 5889, 10806, 11778, 23413, 46826, 70239, 140478, 271951, 543902, 815853, 1631706, 3535363, 7070726, 10606089, 21212178]

約数ペア:

[(1, 21212178), (2, 10606089), (3, 7070726), (6, 3535363), (13, 1631706), (26, 815853), (39, 543902), (78, 271951), (151, 140478), (302, 70239), (453, 46826), (906, 23413), (1801, 11778), (1963, 10806), (3602, 5889), (3926, 5403)]