71280640

素因数分解:

$2^{11}\times 5^1\times {\mathrm{6961}}^1$

素因数の和:6988

約数の個数: 48

約数和(自身を含む): 171056340

約数和(自身を除く): 99775700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 6961, 10240, 13922, 27844, 34805, 55688, 69610, 111376, 139220, 222752, 278440, 445504, 556880, 891008, 1113760, 1782016, 2227520, 3564032, 4455040, 7128064, 8910080, 14256128, 17820160, 35640320, 71280640]

約数ペア:

[(1, 71280640), (2, 35640320), (4, 17820160), (5, 14256128), (8, 8910080), (10, 7128064), (16, 4455040), (20, 3564032), (32, 2227520), (40, 1782016), (64, 1113760), (80, 891008), (128, 556880), (160, 445504), (256, 278440), (320, 222752), (512, 139220), (640, 111376), (1024, 69610), (1280, 55688), (2048, 34805), (2560, 27844), (5120, 13922), (6961, 10240)]