20197496

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{587}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 45722880

約数和(自身を除く): 25525384

約数列:

[1, 2, 4, 8, 11, 17, 22, 23, 34, 44, 46, 68, 88, 92, 136, 184, 187, 253, 374, 391, 506, 587, 748, 782, 1012, 1174, 1496, 1564, 2024, 2348, 3128, 4301, 4696, 6457, 8602, 9979, 12914, 13501, 17204, 19958, 25828, 27002, 34408, 39916, 51656, 54004, 79832, 108008, 109769, 148511, 219538, 229517, 297022, 439076, 459034, 594044, 878152, 918068, 1188088, 1836136, 2524687, 5049374, 10098748, 20197496]

約数ペア:

[(1, 20197496), (2, 10098748), (4, 5049374), (8, 2524687), (11, 1836136), (17, 1188088), (22, 918068), (23, 878152), (34, 594044), (44, 459034), (46, 439076), (68, 297022), (88, 229517), (92, 219538), (136, 148511), (184, 109769), (187, 108008), (253, 79832), (374, 54004), (391, 51656), (506, 39916), (587, 34408), (748, 27002), (782, 25828), (1012, 19958), (1174, 17204), (1496, 13501), (1564, 12914), (2024, 9979), (2348, 8602), (3128, 6457), (4301, 4696)]