21217671

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{673}}^1$

素因数の和:823

約数の個数: 24

約数和(自身を含む): 31963776

約数和(自身を除く): 10746105

約数列:

[1, 3, 9, 31, 93, 113, 279, 339, 673, 1017, 2019, 3503, 6057, 10509, 20863, 31527, 62589, 76049, 187767, 228147, 684441, 2357519, 7072557, 21217671]

約数ペア:

[(1, 21217671), (3, 7072557), (9, 2357519), (31, 684441), (93, 228147), (113, 187767), (279, 76049), (339, 62589), (673, 31527), (1017, 20863), (2019, 10509), (3503, 6057)]