20579715

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 38857728

約数和(自身を除く): 18278013

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 127, 195, 277, 381, 585, 635, 831, 1143, 1385, 1651, 1905, 2493, 3601, 4155, 4953, 5715, 8255, 10803, 12465, 14859, 18005, 24765, 32409, 35179, 54015, 74295, 105537, 162045, 175895, 316611, 457327, 527685, 1371981, 1583055, 2286635, 4115943, 6859905, 20579715]

約数ペア:

[(1, 20579715), (3, 6859905), (5, 4115943), (9, 2286635), (13, 1583055), (15, 1371981), (39, 527685), (45, 457327), (65, 316611), (117, 175895), (127, 162045), (195, 105537), (277, 74295), (381, 54015), (585, 35179), (635, 32409), (831, 24765), (1143, 18005), (1385, 14859), (1651, 12465), (1905, 10803), (2493, 8255), (3601, 5715), (4155, 4953)]