21473750

素因数分解:

$2^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{419}}^1$

素因数の和:482

約数の個数: 40

約数和(自身を含む): 41330520

約数和(自身を除く): 19856770

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 419, 625, 838, 1025, 1250, 2050, 2095, 4190, 5125, 10250, 10475, 17179, 20950, 25625, 34358, 51250, 52375, 85895, 104750, 171790, 261875, 429475, 523750, 858950, 2147375, 4294750, 10736875, 21473750]

約数ペア:

[(1, 21473750), (2, 10736875), (5, 4294750), (10, 2147375), (25, 858950), (41, 523750), (50, 429475), (82, 261875), (125, 171790), (205, 104750), (250, 85895), (410, 52375), (419, 51250), (625, 34358), (838, 25625), (1025, 20950), (1250, 17179), (2050, 10475), (2095, 10250), (4190, 5125)]