21053115

素因数分解:

$3^4\times 5^1\times {\mathrm{227}}^1\times {\mathrm{229}}^1$

素因数の和:473

約数の個数: 40

約数和(自身を含む): 38071440

約数和(自身を除く): 17018325

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 227, 229, 405, 681, 687, 1135, 1145, 2043, 2061, 3405, 3435, 6129, 6183, 10215, 10305, 18387, 18549, 30645, 30915, 51983, 91935, 92745, 155949, 259915, 467847, 779745, 1403541, 2339235, 4210623, 7017705, 21053115]

約数ペア:

[(1, 21053115), (3, 7017705), (5, 4210623), (9, 2339235), (15, 1403541), (27, 779745), (45, 467847), (81, 259915), (135, 155949), (227, 92745), (229, 91935), (405, 51983), (681, 30915), (687, 30645), (1135, 18549), (1145, 18387), (2043, 10305), (2061, 10215), (3405, 6183), (3435, 6129)]