21436515

素因数分解:

$3^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1637}}^1$

素因数の和:1748

約数の個数: 32

約数和(自身を含む): 38525760

約数和(自身を除く): 17089245

約数列:

[1, 3, 5, 9, 15, 27, 45, 97, 135, 291, 485, 873, 1455, 1637, 2619, 4365, 4911, 8185, 13095, 14733, 24555, 44199, 73665, 158789, 220995, 476367, 793945, 1429101, 2381835, 4287303, 7145505, 21436515]

約数ペア:

[(1, 21436515), (3, 7145505), (5, 4287303), (9, 2381835), (15, 1429101), (27, 793945), (45, 476367), (97, 220995), (135, 158789), (291, 73665), (485, 44199), (873, 24555), (1455, 14733), (1637, 13095), (2619, 8185), (4365, 4911)]