161817520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:1034

約数の個数: 80

約数和(自身を含む): 394260480

約数和(自身を除く): 232442960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 71, 80, 124, 142, 155, 248, 284, 310, 355, 496, 568, 620, 710, 919, 1136, 1240, 1420, 1838, 2201, 2480, 2840, 3676, 4402, 4595, 5680, 7352, 8804, 9190, 11005, 14704, 17608, 18380, 22010, 28489, 35216, 36760, 44020, 56978, 65249, 73520, 88040, 113956, 130498, 142445, 176080, 227912, 260996, 284890, 326245, 455824, 521992, 569780, 652490, 1043984, 1139560, 1304980, 2022719, 2279120, 2609960, 4045438, 5219920, 8090876, 10113595, 16181752, 20227190, 32363504, 40454380, 80908760, 161817520]

約数ペア:

[(1, 161817520), (2, 80908760), (4, 40454380), (5, 32363504), (8, 20227190), (10, 16181752), (16, 10113595), (20, 8090876), (31, 5219920), (40, 4045438), (62, 2609960), (71, 2279120), (80, 2022719), (124, 1304980), (142, 1139560), (155, 1043984), (248, 652490), (284, 569780), (310, 521992), (355, 455824), (496, 326245), (568, 284890), (620, 260996), (710, 227912), (919, 176080), (1136, 142445), (1240, 130498), (1420, 113956), (1838, 88040), (2201, 73520), (2480, 65249), (2840, 56978), (3676, 44020), (4402, 36760), (4595, 35216), (5680, 28489), (7352, 22010), (8804, 18380), (9190, 17608), (11005, 14704)]