21651952

素因数分解:

$2^4\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1993}}^1$

素因数の和:2105

約数の個数: 40

約数和(自身を含む): 48462176

約数和(自身を除く): 26810224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 97, 112, 194, 388, 679, 776, 1358, 1552, 1993, 2716, 3986, 5432, 7972, 10864, 13951, 15944, 27902, 31888, 55804, 111608, 193321, 223216, 386642, 773284, 1353247, 1546568, 2706494, 3093136, 5412988, 10825976, 21651952]

約数ペア:

[(1, 21651952), (2, 10825976), (4, 5412988), (7, 3093136), (8, 2706494), (14, 1546568), (16, 1353247), (28, 773284), (56, 386642), (97, 223216), (112, 193321), (194, 111608), (388, 55804), (679, 31888), (776, 27902), (1358, 15944), (1552, 13951), (1993, 10864), (2716, 7972), (3986, 5432)]