21019750

素因数分解:

$2^1\times 5^3\times {\mathrm{83}}^1\times {\mathrm{1013}}^1$

素因数の和:1113

約数の個数: 32

約数和(自身を含む): 39862368

約数和(自身を除く): 18842618

約数列:

[1, 2, 5, 10, 25, 50, 83, 125, 166, 250, 415, 830, 1013, 2026, 2075, 4150, 5065, 10130, 10375, 20750, 25325, 50650, 84079, 126625, 168158, 253250, 420395, 840790, 2101975, 4203950, 10509875, 21019750]

約数ペア:

[(1, 21019750), (2, 10509875), (5, 4203950), (10, 2101975), (25, 840790), (50, 420395), (83, 253250), (125, 168158), (166, 126625), (250, 84079), (415, 50650), (830, 25325), (1013, 20750), (2026, 10375), (2075, 10130), (4150, 5065)]