20260000

素因数分解:

$2^5\times 5^4\times {\mathrm{1013}}^1$

素因数の和:1043

約数の個数: 60

約数和(自身を含む): 49891842

約数和(自身を除く): 29631842

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1013, 1250, 2000, 2026, 2500, 4000, 4052, 5000, 5065, 8104, 10000, 10130, 16208, 20000, 20260, 25325, 32416, 40520, 50650, 81040, 101300, 126625, 162080, 202600, 253250, 405200, 506500, 633125, 810400, 1013000, 1266250, 2026000, 2532500, 4052000, 5065000, 10130000, 20260000]

約数ペア:

[(1, 20260000), (2, 10130000), (4, 5065000), (5, 4052000), (8, 2532500), (10, 2026000), (16, 1266250), (20, 1013000), (25, 810400), (32, 633125), (40, 506500), (50, 405200), (80, 253250), (100, 202600), (125, 162080), (160, 126625), (200, 101300), (250, 81040), (400, 50650), (500, 40520), (625, 32416), (800, 25325), (1000, 20260), (1013, 20000), (1250, 16208), (2000, 10130), (2026, 10000), (2500, 8104), (4000, 5065), (4052, 5000)]