21292065

素因数分解:

$3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{2767}}^1$

素因数の和:2803

約数の個数: 40

約数和(自身を含む): 40191360

約数和(自身を除く): 18899295

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 81, 95, 135, 171, 285, 405, 513, 855, 1539, 2565, 2767, 7695, 8301, 13835, 24903, 41505, 52573, 74709, 124515, 157719, 224127, 262865, 373545, 473157, 788595, 1120635, 1419471, 2365785, 4258413, 7097355, 21292065]

約数ペア:

[(1, 21292065), (3, 7097355), (5, 4258413), (9, 2365785), (15, 1419471), (19, 1120635), (27, 788595), (45, 473157), (57, 373545), (81, 262865), (95, 224127), (135, 157719), (171, 124515), (285, 74709), (405, 52573), (513, 41505), (855, 24903), (1539, 13835), (2565, 8301), (2767, 7695)]