161276800

素因数分解:

$2^7\times 5^2\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:624

約数の個数: 96

約数和(自身を含む): 403155000

約数和(自身を除く): 241878200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 101, 128, 160, 200, 202, 320, 400, 404, 499, 505, 640, 800, 808, 998, 1010, 1600, 1616, 1996, 2020, 2495, 2525, 3200, 3232, 3992, 4040, 4990, 5050, 6464, 7984, 8080, 9980, 10100, 12475, 12928, 15968, 16160, 19960, 20200, 24950, 31936, 32320, 39920, 40400, 49900, 50399, 63872, 64640, 79840, 80800, 99800, 100798, 159680, 161600, 199600, 201596, 251995, 319360, 323200, 399200, 403192, 503990, 798400, 806384, 1007980, 1259975, 1596800, 1612768, 2015960, 2519950, 3225536, 4031920, 5039900, 6451072, 8063840, 10079800, 16127680, 20159600, 32255360, 40319200, 80638400, 161276800]

約数ペア:

[(1, 161276800), (2, 80638400), (4, 40319200), (5, 32255360), (8, 20159600), (10, 16127680), (16, 10079800), (20, 8063840), (25, 6451072), (32, 5039900), (40, 4031920), (50, 3225536), (64, 2519950), (80, 2015960), (100, 1612768), (101, 1596800), (128, 1259975), (160, 1007980), (200, 806384), (202, 798400), (320, 503990), (400, 403192), (404, 399200), (499, 323200), (505, 319360), (640, 251995), (800, 201596), (808, 199600), (998, 161600), (1010, 159680), (1600, 100798), (1616, 99800), (1996, 80800), (2020, 79840), (2495, 64640), (2525, 63872), (3200, 50399), (3232, 49900), (3992, 40400), (4040, 39920), (4990, 32320), (5050, 31936), (6464, 24950), (7984, 20200), (8080, 19960), (9980, 16160), (10100, 15968), (12475, 12928)]