15867205

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 21500640

約数和(自身を除く): 5633435

約数列:

[1, 5, 17, 29, 41, 85, 145, 157, 205, 493, 697, 785, 1189, 2465, 2669, 3485, 4553, 5945, 6437, 13345, 20213, 22765, 32185, 77401, 101065, 109429, 186673, 387005, 547145, 933365, 3173441, 15867205]

約数ペア:

[(1, 15867205), (5, 3173441), (17, 933365), (29, 547145), (41, 387005), (85, 186673), (145, 109429), (157, 101065), (205, 77401), (493, 32185), (697, 22765), (785, 20213), (1189, 13345), (2465, 6437), (2669, 5945), (3485, 4553)]