21053349

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 34369920

約数和(自身を除く): 13316571

約数列:

[1, 3, 9, 19, 23, 53, 57, 69, 101, 159, 171, 207, 303, 437, 477, 909, 1007, 1219, 1311, 1919, 2323, 3021, 3657, 3933, 5353, 5757, 6969, 9063, 10971, 16059, 17271, 20907, 23161, 44137, 48177, 69483, 101707, 123119, 132411, 208449, 305121, 369357, 397233, 915363, 1108071, 2339261, 7017783, 21053349]

約数ペア:

[(1, 21053349), (3, 7017783), (9, 2339261), (19, 1108071), (23, 915363), (53, 397233), (57, 369357), (69, 305121), (101, 208449), (159, 132411), (171, 123119), (207, 101707), (303, 69483), (437, 48177), (477, 44137), (909, 23161), (1007, 20907), (1219, 17271), (1311, 16059), (1919, 10971), (2323, 9063), (3021, 6969), (3657, 5757), (3933, 5353)]