21208080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{911}}^1$

素因数の和:1024

約数の個数: 80

約数和(自身を含む): 66495744

約数和(自身を除く): 45287664

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 911, 970, 1164, 1455, 1552, 1822, 1940, 2328, 2733, 2910, 3644, 3880, 4555, 4656, 5466, 5820, 7288, 7760, 9110, 10932, 11640, 13665, 14576, 18220, 21864, 23280, 27330, 36440, 43728, 54660, 72880, 88367, 109320, 176734, 218640, 265101, 353468, 441835, 530202, 706936, 883670, 1060404, 1325505, 1413872, 1767340, 2120808, 2651010, 3534680, 4241616, 5302020, 7069360, 10604040, 21208080]

約数ペア:

[(1, 21208080), (2, 10604040), (3, 7069360), (4, 5302020), (5, 4241616), (6, 3534680), (8, 2651010), (10, 2120808), (12, 1767340), (15, 1413872), (16, 1325505), (20, 1060404), (24, 883670), (30, 706936), (40, 530202), (48, 441835), (60, 353468), (80, 265101), (97, 218640), (120, 176734), (194, 109320), (240, 88367), (291, 72880), (388, 54660), (485, 43728), (582, 36440), (776, 27330), (911, 23280), (970, 21864), (1164, 18220), (1455, 14576), (1552, 13665), (1822, 11640), (1940, 10932), (2328, 9110), (2733, 7760), (2910, 7288), (3644, 5820), (3880, 5466), (4555, 4656)]