20462480

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:304

約数の個数: 80

約数和(自身を含む): 50663424

約数和(自身を除く): 30200944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 124, 148, 155, 185, 223, 248, 296, 310, 370, 446, 496, 592, 620, 740, 892, 1115, 1147, 1240, 1480, 1784, 2230, 2294, 2480, 2960, 3568, 4460, 4588, 5735, 6913, 8251, 8920, 9176, 11470, 13826, 16502, 17840, 18352, 22940, 27652, 33004, 34565, 41255, 45880, 55304, 66008, 69130, 82510, 91760, 110608, 132016, 138260, 165020, 255781, 276520, 330040, 511562, 553040, 660080, 1023124, 1278905, 2046248, 2557810, 4092496, 5115620, 10231240, 20462480]

約数ペア:

[(1, 20462480), (2, 10231240), (4, 5115620), (5, 4092496), (8, 2557810), (10, 2046248), (16, 1278905), (20, 1023124), (31, 660080), (37, 553040), (40, 511562), (62, 330040), (74, 276520), (80, 255781), (124, 165020), (148, 138260), (155, 132016), (185, 110608), (223, 91760), (248, 82510), (296, 69130), (310, 66008), (370, 55304), (446, 45880), (496, 41255), (592, 34565), (620, 33004), (740, 27652), (892, 22940), (1115, 18352), (1147, 17840), (1240, 16502), (1480, 13826), (1784, 11470), (2230, 9176), (2294, 8920), (2480, 8251), (2960, 6913), (3568, 5735), (4460, 4588)]