21729438

素因数分解:

$2^1\times 3^3\times {\mathrm{349}}^1\times {\mathrm{1153}}^1$

素因数の和:1513

約数の個数: 32

約数和(自身を含む): 48468000

約数和(自身を除く): 26738562

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 349, 698, 1047, 1153, 2094, 2306, 3141, 3459, 6282, 6918, 9423, 10377, 18846, 20754, 31131, 62262, 402397, 804794, 1207191, 2414382, 3621573, 7243146, 10864719, 21729438]

約数ペア:

[(1, 21729438), (2, 10864719), (3, 7243146), (6, 3621573), (9, 2414382), (18, 1207191), (27, 804794), (54, 402397), (349, 62262), (698, 31131), (1047, 20754), (1153, 18846), (2094, 10377), (2306, 9423), (3141, 6918), (3459, 6282)]