20857136

素因数分解:

$2^4\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:226

約数の個数: 60

約数和(自身を含む): 44787312

約数和(自身を除く): 23930176

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 46, 76, 92, 152, 157, 184, 304, 314, 361, 368, 437, 628, 722, 874, 1256, 1444, 1748, 2512, 2888, 2983, 3496, 3611, 5776, 5966, 6992, 7222, 8303, 11932, 14444, 16606, 23864, 28888, 33212, 47728, 56677, 57776, 66424, 68609, 113354, 132848, 137218, 226708, 274436, 453416, 548872, 906832, 1097744, 1303571, 2607142, 5214284, 10428568, 20857136]

約数ペア:

[(1, 20857136), (2, 10428568), (4, 5214284), (8, 2607142), (16, 1303571), (19, 1097744), (23, 906832), (38, 548872), (46, 453416), (76, 274436), (92, 226708), (152, 137218), (157, 132848), (184, 113354), (304, 68609), (314, 66424), (361, 57776), (368, 56677), (437, 47728), (628, 33212), (722, 28888), (874, 23864), (1256, 16606), (1444, 14444), (1748, 11932), (2512, 8303), (2888, 7222), (2983, 6992), (3496, 5966), (3611, 5776)]