71472640

素因数分解:

$2^9\times 5^1\times {\mathrm{27919}}^1$

素因数の和:27942

約数の個数: 40

約数和(自身を含む): 171372960

約数和(自身を除く): 99900320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 27919, 55838, 111676, 139595, 223352, 279190, 446704, 558380, 893408, 1116760, 1786816, 2233520, 3573632, 4467040, 7147264, 8934080, 14294528, 17868160, 35736320, 71472640]

約数ペア:

[(1, 71472640), (2, 35736320), (4, 17868160), (5, 14294528), (8, 8934080), (10, 7147264), (16, 4467040), (20, 3573632), (32, 2233520), (40, 1786816), (64, 1116760), (80, 893408), (128, 558380), (160, 446704), (256, 279190), (320, 223352), (512, 139595), (640, 111676), (1280, 55838), (2560, 27919)]