20936080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:704

約数の個数: 80

約数和(自身を含む): 54621504

約数和(自身を除く): 33685424

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 643, 740, 814, 880, 1286, 1480, 1628, 2035, 2572, 2960, 3215, 3256, 4070, 5144, 6430, 6512, 7073, 8140, 10288, 12860, 14146, 16280, 23791, 25720, 28292, 32560, 35365, 47582, 51440, 56584, 70730, 95164, 113168, 118955, 141460, 190328, 237910, 261701, 282920, 380656, 475820, 523402, 565840, 951640, 1046804, 1308505, 1903280, 2093608, 2617010, 4187216, 5234020, 10468040, 20936080]

約数ペア:

[(1, 20936080), (2, 10468040), (4, 5234020), (5, 4187216), (8, 2617010), (10, 2093608), (11, 1903280), (16, 1308505), (20, 1046804), (22, 951640), (37, 565840), (40, 523402), (44, 475820), (55, 380656), (74, 282920), (80, 261701), (88, 237910), (110, 190328), (148, 141460), (176, 118955), (185, 113168), (220, 95164), (296, 70730), (370, 56584), (407, 51440), (440, 47582), (592, 35365), (643, 32560), (740, 28292), (814, 25720), (880, 23791), (1286, 16280), (1480, 14146), (1628, 12860), (2035, 10288), (2572, 8140), (2960, 7073), (3215, 6512), (3256, 6430), (4070, 5144)]