221493363

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7877}}^1$

素因数の和:8003

約数の個数: 32

約数和(自身を含む): 367051776

約数和(自身を除く): 145558413

約数列:

[1, 3, 7, 13, 21, 39, 91, 103, 273, 309, 721, 1339, 2163, 4017, 7877, 9373, 23631, 28119, 55139, 102401, 165417, 307203, 716807, 811331, 2150421, 2433993, 5679317, 10547303, 17037951, 31641909, 73831121, 221493363]

約数ペア:

[(1, 221493363), (3, 73831121), (7, 31641909), (13, 17037951), (21, 10547303), (39, 5679317), (91, 2433993), (103, 2150421), (273, 811331), (309, 716807), (721, 307203), (1339, 165417), (2163, 102401), (4017, 55139), (7877, 28119), (9373, 23631)]