20403291250

素因数分解:

$2^1\times 5^4\times {\mathrm{41}}^1\times {\mathrm{398113}}^1$

素因数の和:398176

約数の個数: 40

約数和(自身を含む): 39176806284

約数和(自身を除く): 18773515034

約数列:

[1, 2, 5, 10, 25, 41, 50, 82, 125, 205, 250, 410, 625, 1025, 1250, 2050, 5125, 10250, 25625, 51250, 398113, 796226, 1990565, 3981130, 9952825, 16322633, 19905650, 32645266, 49764125, 81613165, 99528250, 163226330, 248820625, 408065825, 497641250, 816131650, 2040329125, 4080658250, 10201645625, 20403291250]

約数ペア:

[(1, 20403291250), (2, 10201645625), (5, 4080658250), (10, 2040329125), (25, 816131650), (41, 497641250), (50, 408065825), (82, 248820625), (125, 163226330), (205, 99528250), (250, 81613165), (410, 49764125), (625, 32645266), (1025, 19905650), (1250, 16322633), (2050, 9952825), (5125, 3981130), (10250, 1990565), (25625, 796226), (51250, 398113)]