19967715

素因数分解:

$3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1049}}^1$

素因数の和:1113

約数の個数: 40

約数和(自身を含む): 36590400

約数和(自身を除く): 16622685

約数列:

[1, 3, 5, 9, 15, 27, 45, 47, 81, 135, 141, 235, 405, 423, 705, 1049, 1269, 2115, 3147, 3807, 5245, 6345, 9441, 15735, 19035, 28323, 47205, 49303, 84969, 141615, 147909, 246515, 424845, 443727, 739545, 1331181, 2218635, 3993543, 6655905, 19967715]

約数ペア:

[(1, 19967715), (3, 6655905), (5, 3993543), (9, 2218635), (15, 1331181), (27, 739545), (45, 443727), (47, 424845), (81, 246515), (135, 147909), (141, 141615), (235, 84969), (405, 49303), (423, 47205), (705, 28323), (1049, 19035), (1269, 15735), (2115, 9441), (3147, 6345), (3807, 5245)]