20407794

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 64

約数和(自身を含む): 46818432

約数和(自身を除く): 26410638

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 61, 66, 74, 111, 122, 137, 183, 222, 274, 366, 407, 411, 671, 814, 822, 1221, 1342, 1507, 2013, 2257, 2442, 3014, 4026, 4514, 4521, 5069, 6771, 8357, 9042, 10138, 13542, 15207, 16714, 24827, 25071, 30414, 49654, 50142, 55759, 74481, 91927, 111518, 148962, 167277, 183854, 275781, 309209, 334554, 551562, 618418, 927627, 1855254, 3401299, 6802598, 10203897, 20407794]

約数ペア:

[(1, 20407794), (2, 10203897), (3, 6802598), (6, 3401299), (11, 1855254), (22, 927627), (33, 618418), (37, 551562), (61, 334554), (66, 309209), (74, 275781), (111, 183854), (122, 167277), (137, 148962), (183, 111518), (222, 91927), (274, 74481), (366, 55759), (407, 50142), (411, 49654), (671, 30414), (814, 25071), (822, 24827), (1221, 16714), (1342, 15207), (1507, 13542), (2013, 10138), (2257, 9042), (2442, 8357), (3014, 6771), (4026, 5069), (4514, 4521)]