7790000

素因数分解:

$2^4\times 5^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:88

約数の個数: 100

約数和(自身を含む): 20337240

約数和(自身を除く): 12547240

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 41, 50, 76, 80, 82, 95, 100, 125, 152, 164, 190, 200, 205, 250, 304, 328, 380, 400, 410, 475, 500, 625, 656, 760, 779, 820, 950, 1000, 1025, 1250, 1520, 1558, 1640, 1900, 2000, 2050, 2375, 2500, 3116, 3280, 3800, 3895, 4100, 4750, 5000, 5125, 6232, 7600, 7790, 8200, 9500, 10000, 10250, 11875, 12464, 15580, 16400, 19000, 19475, 20500, 23750, 25625, 31160, 38000, 38950, 41000, 47500, 51250, 62320, 77900, 82000, 95000, 97375, 102500, 155800, 190000, 194750, 205000, 311600, 389500, 410000, 486875, 779000, 973750, 1558000, 1947500, 3895000, 7790000]

約数ペア:

[(1, 7790000), (2, 3895000), (4, 1947500), (5, 1558000), (8, 973750), (10, 779000), (16, 486875), (19, 410000), (20, 389500), (25, 311600), (38, 205000), (40, 194750), (41, 190000), (50, 155800), (76, 102500), (80, 97375), (82, 95000), (95, 82000), (100, 77900), (125, 62320), (152, 51250), (164, 47500), (190, 41000), (200, 38950), (205, 38000), (250, 31160), (304, 25625), (328, 23750), (380, 20500), (400, 19475), (410, 19000), (475, 16400), (500, 15580), (625, 12464), (656, 11875), (760, 10250), (779, 10000), (820, 9500), (950, 8200), (1000, 7790), (1025, 7600), (1250, 6232), (1520, 5125), (1558, 5000), (1640, 4750), (1900, 4100), (2000, 3895), (2050, 3800), (2375, 3280), (2500, 3116)]