82820000

素因数分解:

$2^5\times 5^4\times {\mathrm{41}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 120

約数和(自身を含む): 210785652

約数和(自身を除く): 127965652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 101, 125, 160, 164, 200, 202, 205, 250, 328, 400, 404, 410, 500, 505, 625, 656, 800, 808, 820, 1000, 1010, 1025, 1250, 1312, 1616, 1640, 2000, 2020, 2050, 2500, 2525, 3232, 3280, 4000, 4040, 4100, 4141, 5000, 5050, 5125, 6560, 8080, 8200, 8282, 10000, 10100, 10250, 12625, 16160, 16400, 16564, 20000, 20200, 20500, 20705, 25250, 25625, 32800, 33128, 40400, 41000, 41410, 50500, 51250, 63125, 66256, 80800, 82000, 82820, 101000, 102500, 103525, 126250, 132512, 164000, 165640, 202000, 205000, 207050, 252500, 331280, 404000, 410000, 414100, 505000, 517625, 662560, 820000, 828200, 1010000, 1035250, 1656400, 2020000, 2070500, 2588125, 3312800, 4141000, 5176250, 8282000, 10352500, 16564000, 20705000, 41410000, 82820000]

約数ペア:

[(1, 82820000), (2, 41410000), (4, 20705000), (5, 16564000), (8, 10352500), (10, 8282000), (16, 5176250), (20, 4141000), (25, 3312800), (32, 2588125), (40, 2070500), (41, 2020000), (50, 1656400), (80, 1035250), (82, 1010000), (100, 828200), (101, 820000), (125, 662560), (160, 517625), (164, 505000), (200, 414100), (202, 410000), (205, 404000), (250, 331280), (328, 252500), (400, 207050), (404, 205000), (410, 202000), (500, 165640), (505, 164000), (625, 132512), (656, 126250), (800, 103525), (808, 102500), (820, 101000), (1000, 82820), (1010, 82000), (1025, 80800), (1250, 66256), (1312, 63125), (1616, 51250), (1640, 50500), (2000, 41410), (2020, 41000), (2050, 40400), (2500, 33128), (2525, 32800), (3232, 25625), (3280, 25250), (4000, 20705), (4040, 20500), (4100, 20200), (4141, 20000), (5000, 16564), (5050, 16400), (5125, 16160), (6560, 12625), (8080, 10250), (8200, 10100), (8282, 10000)]