21145.0000000

素因数分解:

$2^3\times 7^1\times {\mathrm{233}}^1\times {\mathrm{617}}^1$

素因数の和:863

約数の個数: 32

約数和(自身を含む): 17353440

約数和(自身を除く): 9302824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 233, 466, 617, 932, 1234, 1631, 1864, 2468, 3262, 4319, 4936, 6524, 8638, 13048, 17276, 34552, 143761, 287522, 575044, 1006327, 1150088, 2012654, 4025308, 8050616]

約数ペア:

[(1, 8050616), (2, 4025308), (4, 2012654), (7, 1150088), (8, 1006327), (14, 575044), (28, 287522), (56, 143761), (233, 34552), (466, 17276), (617, 13048), (932, 8638), (1234, 6524), (1631, 4936), (1864, 4319), (2468, 3262)]