21239603

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 6961357

約数列:

[1, 7, 11, 23, 67, 77, 161, 179, 253, 469, 737, 1253, 1541, 1771, 1969, 4117, 5159, 10787, 11993, 13783, 16951, 28819, 45287, 83951, 118657, 131923, 275839, 317009, 923461, 1930873, 3034229, 21239603]

約数ペア:

[(1, 21239603), (7, 3034229), (11, 1930873), (23, 923461), (67, 317009), (77, 275839), (161, 131923), (179, 118657), (253, 83951), (469, 45287), (737, 28819), (1253, 16951), (1541, 13783), (1771, 11993), (1969, 10787), (4117, 5159)]