20756560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:356

約数の個数: 80

約数和(自身を含む): 53389440

約数和(自身を除く): 32632880

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 103, 110, 176, 206, 220, 229, 412, 440, 458, 515, 824, 880, 916, 1030, 1133, 1145, 1648, 1832, 2060, 2266, 2290, 2519, 3664, 4120, 4532, 4580, 5038, 5665, 8240, 9064, 9160, 10076, 11330, 12595, 18128, 18320, 20152, 22660, 23587, 25190, 40304, 45320, 47174, 50380, 90640, 94348, 100760, 117935, 188696, 201520, 235870, 259457, 377392, 471740, 518914, 943480, 1037828, 1297285, 1886960, 2075656, 2594570, 4151312, 5189140, 10378280, 20756560]

約数ペア:

[(1, 20756560), (2, 10378280), (4, 5189140), (5, 4151312), (8, 2594570), (10, 2075656), (11, 1886960), (16, 1297285), (20, 1037828), (22, 943480), (40, 518914), (44, 471740), (55, 377392), (80, 259457), (88, 235870), (103, 201520), (110, 188696), (176, 117935), (206, 100760), (220, 94348), (229, 90640), (412, 50380), (440, 47174), (458, 45320), (515, 40304), (824, 25190), (880, 23587), (916, 22660), (1030, 20152), (1133, 18320), (1145, 18128), (1648, 12595), (1832, 11330), (2060, 10076), (2266, 9160), (2290, 9064), (2519, 8240), (3664, 5665), (4120, 5038), (4532, 4580)]