21019767

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2861}}^1$

素因数の和:2974

約数の個数: 16

約数和(自身を含む): 29306880

約数和(自身を除く): 8287113

約数列:

[1, 3, 31, 79, 93, 237, 2449, 2861, 7347, 8583, 88691, 226019, 266073, 678057, 7006589, 21019767]

約数ペア:

[(1, 21019767), (3, 7006589), (31, 678057), (79, 266073), (93, 226019), (237, 88691), (2449, 8583), (2861, 7347)]