20104821

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:646

約数の個数: 32

約数和(自身を含む): 32793600

約数和(自身を除く): 12688779

約数列:

[1, 3, 9, 11, 27, 33, 99, 139, 297, 417, 487, 1251, 1461, 1529, 3753, 4383, 4587, 5357, 13149, 13761, 16071, 41283, 48213, 67693, 144639, 203079, 609237, 744623, 1827711, 2233869, 6701607, 20104821]

約数ペア:

[(1, 20104821), (3, 6701607), (9, 2233869), (11, 1827711), (27, 744623), (33, 609237), (99, 203079), (139, 144639), (297, 67693), (417, 48213), (487, 41283), (1251, 16071), (1461, 13761), (1529, 13149), (3753, 5357), (4383, 4587)]