2158310.00000000

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2689}}^1$

素因数の和:2911

約数の個数: 32

約数和(自身を含む): 51325200

約数和(自身を除く): 28630040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2689, 4220, 5378, 8440, 10756, 13445, 21512, 26890, 53780, 107560, 567379, 1134758, 2269516, 2836895, 4539032, 5673790, 11347580, 22695160]

約数ペア:

[(1, 22695160), (2, 11347580), (4, 5673790), (5, 4539032), (8, 2836895), (10, 2269516), (20, 1134758), (40, 567379), (211, 107560), (422, 53780), (844, 26890), (1055, 21512), (1688, 13445), (2110, 10756), (2689, 8440), (4220, 5378)]