20921306

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1511}}^1$

素因数の和:1586

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17398822

約数列:

[1, 2, 7, 14, 23, 43, 46, 86, 161, 301, 322, 602, 989, 1511, 1978, 3022, 6923, 10577, 13846, 21154, 34753, 64973, 69506, 129946, 243271, 454811, 486542, 909622, 1494379, 2988758, 10460653, 20921306]

約数ペア:

[(1, 20921306), (2, 10460653), (7, 2988758), (14, 1494379), (23, 909622), (43, 486542), (46, 454811), (86, 243271), (161, 129946), (301, 69506), (322, 64973), (602, 34753), (989, 21154), (1511, 13846), (1978, 10577), (3022, 6923)]