155194640

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{307}}^1$

素因数の和:480

約数の個数: 80

約数和(自身を含む): 371226240

約数和(自身を除く): 216031600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 89, 142, 178, 284, 307, 355, 356, 445, 568, 614, 710, 712, 890, 1136, 1228, 1420, 1424, 1535, 1780, 2456, 2840, 3070, 3560, 4912, 5680, 6140, 6319, 7120, 12280, 12638, 21797, 24560, 25276, 27323, 31595, 43594, 50552, 54646, 63190, 87188, 101104, 108985, 109292, 126380, 136615, 174376, 217970, 218584, 252760, 273230, 348752, 435940, 437168, 505520, 546460, 871880, 1092920, 1743760, 1939933, 2185840, 3879866, 7759732, 9699665, 15519464, 19399330, 31038928, 38798660, 77597320, 155194640]

約数ペア:

[(1, 155194640), (2, 77597320), (4, 38798660), (5, 31038928), (8, 19399330), (10, 15519464), (16, 9699665), (20, 7759732), (40, 3879866), (71, 2185840), (80, 1939933), (89, 1743760), (142, 1092920), (178, 871880), (284, 546460), (307, 505520), (355, 437168), (356, 435940), (445, 348752), (568, 273230), (614, 252760), (710, 218584), (712, 217970), (890, 174376), (1136, 136615), (1228, 126380), (1420, 109292), (1424, 108985), (1535, 101104), (1780, 87188), (2456, 63190), (2840, 54646), (3070, 50552), (3560, 43594), (4912, 31595), (5680, 27323), (6140, 25276), (6319, 24560), (7120, 21797), (12280, 12638)]