19265720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 46379520

約数和(自身を除く): 27113800

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 43, 46, 86, 92, 115, 172, 184, 215, 230, 344, 430, 460, 487, 860, 920, 974, 989, 1720, 1948, 1978, 2435, 3896, 3956, 4870, 4945, 7912, 9740, 9890, 11201, 19480, 19780, 20941, 22402, 39560, 41882, 44804, 56005, 83764, 89608, 104705, 112010, 167528, 209410, 224020, 418820, 448040, 481643, 837640, 963286, 1926572, 2408215, 3853144, 4816430, 9632860, 19265720]

約数ペア:

[(1, 19265720), (2, 9632860), (4, 4816430), (5, 3853144), (8, 2408215), (10, 1926572), (20, 963286), (23, 837640), (40, 481643), (43, 448040), (46, 418820), (86, 224020), (92, 209410), (115, 167528), (172, 112010), (184, 104705), (215, 89608), (230, 83764), (344, 56005), (430, 44804), (460, 41882), (487, 39560), (860, 22402), (920, 20941), (974, 19780), (989, 19480), (1720, 11201), (1948, 9890), (1978, 9740), (2435, 7912), (3896, 4945), (3956, 4870)]