21108750

素因数分解:

$2^1\times 3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{433}}^1$

素因数の和:471

約数の個数: 80

約数和(自身を含む): 56944272

約数和(自身を除く): 35835522

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 125, 130, 150, 195, 250, 325, 375, 390, 433, 625, 650, 750, 866, 975, 1250, 1299, 1625, 1875, 1950, 2165, 2598, 3250, 3750, 4330, 4875, 5629, 6495, 8125, 9750, 10825, 11258, 12990, 16250, 16887, 21650, 24375, 28145, 32475, 33774, 48750, 54125, 56290, 64950, 84435, 108250, 140725, 162375, 168870, 270625, 281450, 324750, 422175, 541250, 703625, 811875, 844350, 1407250, 1623750, 2110875, 3518125, 4221750, 7036250, 10554375, 21108750]

約数ペア:

[(1, 21108750), (2, 10554375), (3, 7036250), (5, 4221750), (6, 3518125), (10, 2110875), (13, 1623750), (15, 1407250), (25, 844350), (26, 811875), (30, 703625), (39, 541250), (50, 422175), (65, 324750), (75, 281450), (78, 270625), (125, 168870), (130, 162375), (150, 140725), (195, 108250), (250, 84435), (325, 64950), (375, 56290), (390, 54125), (433, 48750), (625, 33774), (650, 32475), (750, 28145), (866, 24375), (975, 21650), (1250, 16887), (1299, 16250), (1625, 12990), (1875, 11258), (1950, 10825), (2165, 9750), (2598, 8125), (3250, 6495), (3750, 5629), (4330, 4875)]