18380180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{10099}}^1$

素因数の和:10128

約数の個数: 48

約数和(自身を含む): 47510400

約数和(自身を除く): 29130220

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 10099, 20198, 40396, 50495, 70693, 100990, 131287, 141386, 201980, 262574, 282772, 353465, 525148, 656435, 706930, 919009, 1312870, 1413860, 1838018, 2625740, 3676036, 4595045, 9190090, 18380180]

約数ペア:

[(1, 18380180), (2, 9190090), (4, 4595045), (5, 3676036), (7, 2625740), (10, 1838018), (13, 1413860), (14, 1312870), (20, 919009), (26, 706930), (28, 656435), (35, 525148), (52, 353465), (65, 282772), (70, 262574), (91, 201980), (130, 141386), (140, 131287), (182, 100990), (260, 70693), (364, 50495), (455, 40396), (910, 20198), (1820, 10099)]