20797515

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12491}}^1$

素因数の和:12539

約数の個数: 24

約数和(自身を含む): 37026288

約数和(自身を除く): 16228773

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12491, 37473, 62455, 112419, 187365, 462167, 562095, 1386501, 2310835, 4159503, 6932505, 20797515]

約数ペア:

[(1, 20797515), (3, 6932505), (5, 4159503), (9, 2310835), (15, 1386501), (37, 562095), (45, 462167), (111, 187365), (185, 112419), (333, 62455), (555, 37473), (1665, 12491)]