20743401

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:741

約数の個数: 32

約数和(自身を含む): 33527808

約数和(自身を除く): 12784407

約数列:

[1, 3, 7, 21, 23, 67, 69, 161, 201, 469, 483, 641, 1407, 1541, 1923, 4487, 4623, 10787, 13461, 14743, 32361, 42947, 44229, 103201, 128841, 300629, 309603, 901887, 987781, 2963343, 6914467, 20743401]

約数ペア:

[(1, 20743401), (3, 6914467), (7, 2963343), (21, 987781), (23, 901887), (67, 309603), (69, 300629), (161, 128841), (201, 103201), (469, 44229), (483, 42947), (641, 32361), (1407, 14743), (1541, 13461), (1923, 10787), (4487, 4623)]