18844415

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:211

約数の個数: 32

約数和(自身を含む): 25194240

約数和(自身を除く): 6349825

約数列:

[1, 5, 17, 47, 53, 85, 89, 235, 265, 445, 799, 901, 1513, 2491, 3995, 4183, 4505, 4717, 7565, 12455, 20915, 23585, 42347, 71111, 80189, 211735, 221699, 355555, 400945, 1108495, 3768883, 18844415]

約数ペア:

[(1, 18844415), (5, 3768883), (17, 1108495), (47, 400945), (53, 355555), (85, 221699), (89, 211735), (235, 80189), (265, 71111), (445, 42347), (799, 23585), (901, 20915), (1513, 12455), (2491, 7565), (3995, 4717), (4183, 4505)]