21144735

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7703}}^1$

素因数の和:7775

約数の個数: 24

約数和(自身を含む): 37256544

約数和(自身を除く): 16111809

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7703, 23109, 38515, 69327, 115545, 346635, 469883, 1409649, 2349415, 4228947, 7048245, 21144735]

約数ペア:

[(1, 21144735), (3, 7048245), (5, 4228947), (9, 2349415), (15, 1409649), (45, 469883), (61, 346635), (183, 115545), (305, 69327), (549, 38515), (915, 23109), (2745, 7703)]