21203792

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:555

約数の個数: 40

約数和(自身を含む): 43259136

約数和(自身を除く): 22055344

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 157, 184, 314, 367, 368, 628, 734, 1256, 1468, 2512, 2936, 3611, 5872, 7222, 8441, 14444, 16882, 28888, 33764, 57619, 57776, 67528, 115238, 135056, 230476, 460952, 921904, 1325237, 2650474, 5300948, 10601896, 21203792]

約数ペア:

[(1, 21203792), (2, 10601896), (4, 5300948), (8, 2650474), (16, 1325237), (23, 921904), (46, 460952), (92, 230476), (157, 135056), (184, 115238), (314, 67528), (367, 57776), (368, 57619), (628, 33764), (734, 28888), (1256, 16882), (1468, 14444), (2512, 8441), (2936, 7222), (3611, 5872)]