21042045

素因数分解:

$3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1973}}^1$

素因数の和:2066

約数の個数: 32

約数和(自身を含む): 37900800

約数和(自身を除く): 16858755

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 135, 237, 395, 711, 1185, 1973, 2133, 3555, 5919, 9865, 10665, 17757, 29595, 53271, 88785, 155867, 266355, 467601, 779335, 1402803, 2338005, 4208409, 7014015, 21042045]

約数ペア:

[(1, 21042045), (3, 7014015), (5, 4208409), (9, 2338005), (15, 1402803), (27, 779335), (45, 467601), (79, 266355), (135, 155867), (237, 88785), (395, 53271), (711, 29595), (1185, 17757), (1973, 10665), (2133, 9865), (3555, 5919)]