21028190

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{1229}}^1$

素因数の和:1324

約数の個数: 32

約数和(自身を含む): 39852000

約数和(自身を除く): 18823810

約数列:

[1, 2, 5, 10, 29, 58, 59, 118, 145, 290, 295, 590, 1229, 1711, 2458, 3422, 6145, 8555, 12290, 17110, 35641, 71282, 72511, 145022, 178205, 356410, 362555, 725110, 2102819, 4205638, 10514095, 21028190]

約数ペア:

[(1, 21028190), (2, 10514095), (5, 4205638), (10, 2102819), (29, 725110), (58, 362555), (59, 356410), (118, 178205), (145, 145022), (290, 72511), (295, 71282), (590, 35641), (1229, 17110), (1711, 12290), (2458, 8555), (3422, 6145)]