21004566

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 48646656

約数和(自身を除く): 27642090

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 101, 137, 138, 202, 253, 274, 303, 411, 506, 606, 759, 822, 1111, 1507, 1518, 2222, 2323, 3014, 3151, 3333, 4521, 4646, 6302, 6666, 6969, 9042, 9453, 13837, 13938, 18906, 25553, 27674, 34661, 41511, 51106, 69322, 76659, 83022, 103983, 152207, 153318, 207966, 304414, 318251, 456621, 636502, 913242, 954753, 1909506, 3500761, 7001522, 10502283, 21004566]

約数ペア:

[(1, 21004566), (2, 10502283), (3, 7001522), (6, 3500761), (11, 1909506), (22, 954753), (23, 913242), (33, 636502), (46, 456621), (66, 318251), (69, 304414), (101, 207966), (137, 153318), (138, 152207), (202, 103983), (253, 83022), (274, 76659), (303, 69322), (411, 51106), (506, 41511), (606, 34661), (759, 27674), (822, 25553), (1111, 18906), (1507, 13938), (1518, 13837), (2222, 9453), (2323, 9042), (3014, 6969), (3151, 6666), (3333, 6302), (4521, 4646)]