21787761

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13781}}^1$

素因数の和:13832

約数の個数: 16

約数和(自身を含む): 31753728

約数和(自身を除く): 9965967

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13781, 41343, 234277, 427211, 702831, 1281633, 7262587, 21787761]

約数ペア:

[(1, 21787761), (3, 7262587), (17, 1281633), (31, 702831), (51, 427211), (93, 234277), (527, 41343), (1581, 13781)]