64510720

素因数分解:

$2^8\times 5^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:621

約数の個数: 72

約数和(自身を含む): 156366000

約数和(自身を除く): 91855280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 128, 160, 202, 256, 320, 404, 499, 505, 640, 808, 998, 1010, 1280, 1616, 1996, 2020, 2495, 3232, 3992, 4040, 4990, 6464, 7984, 8080, 9980, 12928, 15968, 16160, 19960, 25856, 31936, 32320, 39920, 50399, 63872, 64640, 79840, 100798, 127744, 129280, 159680, 201596, 251995, 319360, 403192, 503990, 638720, 806384, 1007980, 1612768, 2015960, 3225536, 4031920, 6451072, 8063840, 12902144, 16127680, 32255360, 64510720]

約数ペア:

[(1, 64510720), (2, 32255360), (4, 16127680), (5, 12902144), (8, 8063840), (10, 6451072), (16, 4031920), (20, 3225536), (32, 2015960), (40, 1612768), (64, 1007980), (80, 806384), (101, 638720), (128, 503990), (160, 403192), (202, 319360), (256, 251995), (320, 201596), (404, 159680), (499, 129280), (505, 127744), (640, 100798), (808, 79840), (998, 64640), (1010, 63872), (1280, 50399), (1616, 39920), (1996, 32320), (2020, 31936), (2495, 25856), (3232, 19960), (3992, 16160), (4040, 15968), (4990, 12928), (6464, 9980), (7984, 8080)]