28765000

素因数分解:

$2^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{523}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 73663920

約数和(自身を除く): 44898920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 523, 550, 625, 1000, 1046, 1100, 1250, 1375, 2092, 2200, 2500, 2615, 2750, 4184, 5000, 5230, 5500, 5753, 6875, 10460, 11000, 11506, 13075, 13750, 20920, 23012, 26150, 27500, 28765, 46024, 52300, 55000, 57530, 65375, 104600, 115060, 130750, 143825, 230120, 261500, 287650, 326875, 523000, 575300, 653750, 719125, 1150600, 1307500, 1438250, 2615000, 2876500, 3595625, 5753000, 7191250, 14382500, 28765000]

約数ペア:

[(1, 28765000), (2, 14382500), (4, 7191250), (5, 5753000), (8, 3595625), (10, 2876500), (11, 2615000), (20, 1438250), (22, 1307500), (25, 1150600), (40, 719125), (44, 653750), (50, 575300), (55, 523000), (88, 326875), (100, 287650), (110, 261500), (125, 230120), (200, 143825), (220, 130750), (250, 115060), (275, 104600), (440, 65375), (500, 57530), (523, 55000), (550, 52300), (625, 46024), (1000, 28765), (1046, 27500), (1100, 26150), (1250, 23012), (1375, 20920), (2092, 13750), (2200, 13075), (2500, 11506), (2615, 11000), (2750, 10460), (4184, 6875), (5000, 5753), (5230, 5500)]