21009994

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{401}}^1$

素因数の和:510

約数の個数: 32

約数和(自身を含む): 35427456

約数和(自身を除く): 14417462

約数列:

[1, 2, 17, 23, 34, 46, 67, 134, 391, 401, 782, 802, 1139, 1541, 2278, 3082, 6817, 9223, 13634, 18446, 26197, 26867, 52394, 53734, 156791, 313582, 456739, 617941, 913478, 1235882, 10504997, 21009994]

約数ペア:

[(1, 21009994), (2, 10504997), (17, 1235882), (23, 913478), (34, 617941), (46, 456739), (67, 313582), (134, 156791), (391, 53734), (401, 52394), (782, 26867), (802, 26197), (1139, 18446), (1541, 13634), (2278, 9223), (3082, 6817)]