21215000

素因数分解:

$2^3\times 5^4\times {\mathrm{4243}}^1$

素因数の和:4269

約数の個数: 40

約数和(自身を含む): 49718460

約数和(自身を除く): 28503460

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4243, 5000, 8486, 16972, 21215, 33944, 42430, 84860, 106075, 169720, 212150, 424300, 530375, 848600, 1060750, 2121500, 2651875, 4243000, 5303750, 10607500, 21215000]

約数ペア:

[(1, 21215000), (2, 10607500), (4, 5303750), (5, 4243000), (8, 2651875), (10, 2121500), (20, 1060750), (25, 848600), (40, 530375), (50, 424300), (100, 212150), (125, 169720), (200, 106075), (250, 84860), (500, 42430), (625, 33944), (1000, 21215), (1250, 16972), (2500, 8486), (4243, 5000)]