21365965

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 6834995

約数列:

[1, 5, 23, 47, 59, 67, 115, 235, 295, 335, 1081, 1357, 1541, 2773, 3149, 3953, 5405, 6785, 7705, 13865, 15745, 19765, 63779, 72427, 90919, 185791, 318895, 362135, 454595, 928955, 4273193, 21365965]

約数ペア:

[(1, 21365965), (5, 4273193), (23, 928955), (47, 454595), (59, 362135), (67, 318895), (115, 185791), (235, 90919), (295, 72427), (335, 63779), (1081, 19765), (1357, 15745), (1541, 13865), (2773, 7705), (3149, 6785), (3953, 5405)]