161921680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{599}}^1$

素因数の和:752

約数の個数: 80

約数和(自身を含む): 392832000

約数和(自身を除く): 230910320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 109, 124, 155, 218, 248, 310, 436, 496, 545, 599, 620, 872, 1090, 1198, 1240, 1744, 2180, 2396, 2480, 2995, 3379, 4360, 4792, 5990, 6758, 8720, 9584, 11980, 13516, 16895, 18569, 23960, 27032, 33790, 37138, 47920, 54064, 65291, 67580, 74276, 92845, 130582, 135160, 148552, 185690, 261164, 270320, 297104, 326455, 371380, 522328, 652910, 742760, 1044656, 1305820, 1485520, 2024021, 2611640, 4048042, 5223280, 8096084, 10120105, 16192168, 20240210, 32384336, 40480420, 80960840, 161921680]

約数ペア:

[(1, 161921680), (2, 80960840), (4, 40480420), (5, 32384336), (8, 20240210), (10, 16192168), (16, 10120105), (20, 8096084), (31, 5223280), (40, 4048042), (62, 2611640), (80, 2024021), (109, 1485520), (124, 1305820), (155, 1044656), (218, 742760), (248, 652910), (310, 522328), (436, 371380), (496, 326455), (545, 297104), (599, 270320), (620, 261164), (872, 185690), (1090, 148552), (1198, 135160), (1240, 130582), (1744, 92845), (2180, 74276), (2396, 67580), (2480, 65291), (2995, 54064), (3379, 47920), (4360, 37138), (4792, 33790), (5990, 27032), (6758, 23960), (8720, 18569), (9584, 16895), (11980, 13516)]