80278000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 160

約数和(自身を含む): 219360960

約数和(自身を除く): 139082960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 41, 44, 50, 55, 80, 82, 88, 89, 100, 110, 125, 164, 176, 178, 200, 205, 220, 250, 275, 328, 356, 400, 410, 440, 445, 451, 500, 550, 656, 712, 820, 880, 890, 902, 979, 1000, 1025, 1100, 1375, 1424, 1640, 1780, 1804, 1958, 2000, 2050, 2200, 2225, 2255, 2750, 3280, 3560, 3608, 3649, 3916, 4100, 4400, 4450, 4510, 4895, 5125, 5500, 7120, 7216, 7298, 7832, 8200, 8900, 9020, 9790, 10250, 11000, 11125, 11275, 14596, 15664, 16400, 17800, 18040, 18245, 19580, 20500, 22000, 22250, 22550, 24475, 29192, 35600, 36080, 36490, 39160, 40139, 41000, 44500, 45100, 48950, 56375, 58384, 72980, 78320, 80278, 82000, 89000, 90200, 91225, 97900, 112750, 122375, 145960, 160556, 178000, 180400, 182450, 195800, 200695, 225500, 244750, 291920, 321112, 364900, 391600, 401390, 451000, 456125, 489500, 642224, 729800, 802780, 902000, 912250, 979000, 1003475, 1459600, 1605560, 1824500, 1958000, 2006950, 3211120, 3649000, 4013900, 5017375, 7298000, 8027800, 10034750, 16055600, 20069500, 40139000, 80278000]

約数ペア:

[(1, 80278000), (2, 40139000), (4, 20069500), (5, 16055600), (8, 10034750), (10, 8027800), (11, 7298000), (16, 5017375), (20, 4013900), (22, 3649000), (25, 3211120), (40, 2006950), (41, 1958000), (44, 1824500), (50, 1605560), (55, 1459600), (80, 1003475), (82, 979000), (88, 912250), (89, 902000), (100, 802780), (110, 729800), (125, 642224), (164, 489500), (176, 456125), (178, 451000), (200, 401390), (205, 391600), (220, 364900), (250, 321112), (275, 291920), (328, 244750), (356, 225500), (400, 200695), (410, 195800), (440, 182450), (445, 180400), (451, 178000), (500, 160556), (550, 145960), (656, 122375), (712, 112750), (820, 97900), (880, 91225), (890, 90200), (902, 89000), (979, 82000), (1000, 80278), (1025, 78320), (1100, 72980), (1375, 58384), (1424, 56375), (1640, 48950), (1780, 45100), (1804, 44500), (1958, 41000), (2000, 40139), (2050, 39160), (2200, 36490), (2225, 36080), (2255, 35600), (2750, 29192), (3280, 24475), (3560, 22550), (3608, 22250), (3649, 22000), (3916, 20500), (4100, 19580), (4400, 18245), (4450, 18040), (4510, 17800), (4895, 16400), (5125, 15664), (5500, 14596), (7120, 11275), (7216, 11125), (7298, 11000), (7832, 10250), (8200, 9790), (8900, 9020)]