20910105

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 38413440

約数和(自身を除く): 17503335

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 89, 115, 207, 227, 267, 345, 445, 681, 801, 1035, 1135, 1335, 2043, 2047, 3405, 4005, 5221, 6141, 10215, 10235, 15663, 18423, 20203, 26105, 30705, 46989, 60609, 78315, 92115, 101015, 181827, 234945, 303045, 464669, 909135, 1394007, 2323345, 4182021, 6970035, 20910105]

約数ペア:

[(1, 20910105), (3, 6970035), (5, 4182021), (9, 2323345), (15, 1394007), (23, 909135), (45, 464669), (69, 303045), (89, 234945), (115, 181827), (207, 101015), (227, 92115), (267, 78315), (345, 60609), (445, 46989), (681, 30705), (801, 26105), (1035, 20203), (1135, 18423), (1335, 15663), (2043, 10235), (2047, 10215), (3405, 6141), (4005, 5221)]