21638000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:403

約数の個数: 80

約数和(自身を含む): 54163200

約数和(自身を除く): 32525200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 349, 400, 496, 500, 620, 698, 775, 1000, 1240, 1396, 1550, 1745, 2000, 2480, 2792, 3100, 3490, 3875, 5584, 6200, 6980, 7750, 8725, 10819, 12400, 13960, 15500, 17450, 21638, 27920, 31000, 34900, 43276, 43625, 54095, 62000, 69800, 86552, 87250, 108190, 139600, 173104, 174500, 216380, 270475, 349000, 432760, 540950, 698000, 865520, 1081900, 1352375, 2163800, 2704750, 4327600, 5409500, 10819000, 21638000]

約数ペア:

[(1, 21638000), (2, 10819000), (4, 5409500), (5, 4327600), (8, 2704750), (10, 2163800), (16, 1352375), (20, 1081900), (25, 865520), (31, 698000), (40, 540950), (50, 432760), (62, 349000), (80, 270475), (100, 216380), (124, 174500), (125, 173104), (155, 139600), (200, 108190), (248, 87250), (250, 86552), (310, 69800), (349, 62000), (400, 54095), (496, 43625), (500, 43276), (620, 34900), (698, 31000), (775, 27920), (1000, 21638), (1240, 17450), (1396, 15500), (1550, 13960), (1745, 12400), (2000, 10819), (2480, 8725), (2792, 7750), (3100, 6980), (3490, 6200), (3875, 5584)]