21914240

素因数分解:

$2^7\times 5^1\times {\mathrm{97}}^1\times {\mathrm{353}}^1$

素因数の和:469

約数の個数: 64

約数和(自身を含む): 53078760

約数和(自身を除く): 31164520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 97, 128, 160, 194, 320, 353, 388, 485, 640, 706, 776, 970, 1412, 1552, 1765, 1940, 2824, 3104, 3530, 3880, 5648, 6208, 7060, 7760, 11296, 12416, 14120, 15520, 22592, 28240, 31040, 34241, 45184, 56480, 62080, 68482, 112960, 136964, 171205, 225920, 273928, 342410, 547856, 684820, 1095712, 1369640, 2191424, 2739280, 4382848, 5478560, 10957120, 21914240]

約数ペア:

[(1, 21914240), (2, 10957120), (4, 5478560), (5, 4382848), (8, 2739280), (10, 2191424), (16, 1369640), (20, 1095712), (32, 684820), (40, 547856), (64, 342410), (80, 273928), (97, 225920), (128, 171205), (160, 136964), (194, 112960), (320, 68482), (353, 62080), (388, 56480), (485, 45184), (640, 34241), (706, 31040), (776, 28240), (970, 22592), (1412, 15520), (1552, 14120), (1765, 12416), (1940, 11296), (2824, 7760), (3104, 7060), (3530, 6208), (3880, 5648)]