81778000

素因数分解:

$2^4\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1319}}^1$

素因数の和:1373

約数の個数: 80

約数和(自身を含む): 204272640

約数和(自身を除く): 122494640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 125, 155, 200, 248, 250, 310, 400, 496, 500, 620, 775, 1000, 1240, 1319, 1550, 2000, 2480, 2638, 3100, 3875, 5276, 6200, 6595, 7750, 10552, 12400, 13190, 15500, 21104, 26380, 31000, 32975, 40889, 52760, 62000, 65950, 81778, 105520, 131900, 163556, 164875, 204445, 263800, 327112, 329750, 408890, 527600, 654224, 659500, 817780, 1022225, 1319000, 1635560, 2044450, 2638000, 3271120, 4088900, 5111125, 8177800, 10222250, 16355600, 20444500, 40889000, 81778000]

約数ペア:

[(1, 81778000), (2, 40889000), (4, 20444500), (5, 16355600), (8, 10222250), (10, 8177800), (16, 5111125), (20, 4088900), (25, 3271120), (31, 2638000), (40, 2044450), (50, 1635560), (62, 1319000), (80, 1022225), (100, 817780), (124, 659500), (125, 654224), (155, 527600), (200, 408890), (248, 329750), (250, 327112), (310, 263800), (400, 204445), (496, 164875), (500, 163556), (620, 131900), (775, 105520), (1000, 81778), (1240, 65950), (1319, 62000), (1550, 52760), (2000, 40889), (2480, 32975), (2638, 31000), (3100, 26380), (3875, 21104), (5276, 15500), (6200, 13190), (6595, 12400), (7750, 10552)]