21797613

素因数分解:

$3^3\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:338

約数の個数: 32

約数和(自身を含む): 33523200

約数和(自身を除く): 11725587

約数列:

[1, 3, 9, 27, 47, 89, 141, 193, 267, 423, 579, 801, 1269, 1737, 2403, 4183, 5211, 9071, 12549, 17177, 27213, 37647, 51531, 81639, 112941, 154593, 244917, 463779, 807319, 2421957, 7265871, 21797613]

約数ペア:

[(1, 21797613), (3, 7265871), (9, 2421957), (27, 807319), (47, 463779), (89, 244917), (141, 154593), (193, 112941), (267, 81639), (423, 51531), (579, 37647), (801, 27213), (1269, 17177), (1737, 12549), (2403, 9071), (4183, 5211)]