21073128

素因数分解:

$2^3\times 3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1249}}^1$

素因数の和:1314

約数の個数: 64

約数和(自身を含む): 57000000

約数和(自身を除く): 35926872

約数列:

[1, 2, 3, 4, 6, 8, 12, 19, 24, 37, 38, 57, 74, 76, 111, 114, 148, 152, 222, 228, 296, 444, 456, 703, 888, 1249, 1406, 2109, 2498, 2812, 3747, 4218, 4996, 5624, 7494, 8436, 9992, 14988, 16872, 23731, 29976, 46213, 47462, 71193, 92426, 94924, 138639, 142386, 184852, 189848, 277278, 284772, 369704, 554556, 569544, 878047, 1109112, 1756094, 2634141, 3512188, 5268282, 7024376, 10536564, 21073128]

約数ペア:

[(1, 21073128), (2, 10536564), (3, 7024376), (4, 5268282), (6, 3512188), (8, 2634141), (12, 1756094), (19, 1109112), (24, 878047), (37, 569544), (38, 554556), (57, 369704), (74, 284772), (76, 277278), (111, 189848), (114, 184852), (148, 142386), (152, 138639), (222, 94924), (228, 92426), (296, 71193), (444, 47462), (456, 46213), (703, 29976), (888, 23731), (1249, 16872), (1406, 14988), (2109, 9992), (2498, 8436), (2812, 7494), (3747, 5624), (4218, 4996)]