20171961800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{12979}}^1$

素因数の和:13423

約数の個数: 96

約数和(自身を含む): 49492740000

約数和(自身を除く): 29320778200

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 409, 475, 760, 818, 950, 1636, 1900, 2045, 3272, 3800, 4090, 7771, 8180, 10225, 12979, 15542, 16360, 20450, 25958, 31084, 38855, 40900, 51916, 62168, 64895, 77710, 81800, 103832, 129790, 155420, 194275, 246601, 259580, 310840, 324475, 388550, 493202, 519160, 648950, 777100, 986404, 1233005, 1297900, 1554200, 1972808, 2466010, 2595800, 4932020, 5308411, 6165025, 9864040, 10616822, 12330050, 21233644, 24660100, 26542055, 42467288, 49320200, 53084110, 100859809, 106168220, 132710275, 201719618, 212336440, 265420550, 403439236, 504299045, 530841100, 806878472, 1008598090, 1061682200, 2017196180, 2521495225, 4034392360, 5042990450, 10085980900, 20171961800]

約数ペア:

[(1, 20171961800), (2, 10085980900), (4, 5042990450), (5, 4034392360), (8, 2521495225), (10, 2017196180), (19, 1061682200), (20, 1008598090), (25, 806878472), (38, 530841100), (40, 504299045), (50, 403439236), (76, 265420550), (95, 212336440), (100, 201719618), (152, 132710275), (190, 106168220), (200, 100859809), (380, 53084110), (409, 49320200), (475, 42467288), (760, 26542055), (818, 24660100), (950, 21233644), (1636, 12330050), (1900, 10616822), (2045, 9864040), (3272, 6165025), (3800, 5308411), (4090, 4932020), (7771, 2595800), (8180, 2466010), (10225, 1972808), (12979, 1554200), (15542, 1297900), (16360, 1233005), (20450, 986404), (25958, 777100), (31084, 648950), (38855, 519160), (40900, 493202), (51916, 388550), (62168, 324475), (64895, 310840), (77710, 259580), (81800, 246601), (103832, 194275), (129790, 155420)]