21480640

素因数分解:

$2^6\times 5^1\times {\mathrm{19}}^1\times {\mathrm{3533}}^1$

素因数の和:3569

約数の個数: 56

約数和(自身を含む): 53858160

約数和(自身を除く): 32377520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 152, 160, 190, 304, 320, 380, 608, 760, 1216, 1520, 3040, 3533, 6080, 7066, 14132, 17665, 28264, 35330, 56528, 67127, 70660, 113056, 134254, 141320, 226112, 268508, 282640, 335635, 537016, 565280, 671270, 1074032, 1130560, 1342540, 2148064, 2685080, 4296128, 5370160, 10740320, 21480640]

約数ペア:

[(1, 21480640), (2, 10740320), (4, 5370160), (5, 4296128), (8, 2685080), (10, 2148064), (16, 1342540), (19, 1130560), (20, 1074032), (32, 671270), (38, 565280), (40, 537016), (64, 335635), (76, 282640), (80, 268508), (95, 226112), (152, 141320), (160, 134254), (190, 113056), (304, 70660), (320, 67127), (380, 56528), (608, 35330), (760, 28264), (1216, 17665), (1520, 14132), (3040, 7066), (3533, 6080)]