21877821

素因数分解:

$3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{1453}}^1$

素因数の和:1705

約数の個数: 24

約数和(自身を含む): 36291840

約数和(自身を除く): 14414019

約数列:

[1, 3, 7, 9, 21, 63, 239, 717, 1453, 1673, 2151, 4359, 5019, 10171, 13077, 15057, 30513, 91539, 347267, 1041801, 2430869, 3125403, 7292607, 21877821]

約数ペア:

[(1, 21877821), (3, 7292607), (7, 3125403), (9, 2430869), (21, 1041801), (63, 347267), (239, 91539), (717, 30513), (1453, 15057), (1673, 13077), (2151, 10171), (4359, 5019)]