18730000

素因数分解:

$2^4\times 5^4\times {\mathrm{1873}}^1$

素因数の和:1901

約数の個数: 50

約数和(自身を含む): 45371414

約数和(自身を除く): 26641414

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1873, 2000, 2500, 3746, 5000, 7492, 9365, 10000, 14984, 18730, 29968, 37460, 46825, 74920, 93650, 149840, 187300, 234125, 374600, 468250, 749200, 936500, 1170625, 1873000, 2341250, 3746000, 4682500, 9365000, 18730000]

約数ペア:

[(1, 18730000), (2, 9365000), (4, 4682500), (5, 3746000), (8, 2341250), (10, 1873000), (16, 1170625), (20, 936500), (25, 749200), (40, 468250), (50, 374600), (80, 234125), (100, 187300), (125, 149840), (200, 93650), (250, 74920), (400, 46825), (500, 37460), (625, 29968), (1000, 18730), (1250, 14984), (1873, 10000), (2000, 9365), (2500, 7492), (3746, 5000)]