21840489

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{487}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 35604480

約数和(自身を除く): 13763991

約数列:

[1, 3, 9, 11, 27, 33, 99, 151, 297, 453, 487, 1359, 1461, 1661, 4077, 4383, 4983, 5357, 13149, 14949, 16071, 44847, 48213, 73537, 144639, 220611, 661833, 808907, 1985499, 2426721, 7280163, 21840489]

約数ペア:

[(1, 21840489), (3, 7280163), (9, 2426721), (11, 1985499), (27, 808907), (33, 661833), (99, 220611), (151, 144639), (297, 73537), (453, 48213), (487, 44847), (1359, 16071), (1461, 14949), (1661, 13149), (4077, 5357), (4383, 4983)]