20197456

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{79}}^1$

素因数の和:164

約数の個数: 60

約数和(自身を含む): 43201600

約数和(自身を除く): 23004144

約数列:

[1, 2, 4, 8, 16, 19, 29, 38, 58, 76, 79, 116, 152, 158, 232, 304, 316, 464, 551, 632, 841, 1102, 1264, 1501, 1682, 2204, 2291, 3002, 3364, 4408, 4582, 6004, 6728, 8816, 9164, 12008, 13456, 15979, 18328, 24016, 31958, 36656, 43529, 63916, 66439, 87058, 127832, 132878, 174116, 255664, 265756, 348232, 531512, 696464, 1063024, 1262341, 2524682, 5049364, 10098728, 20197456]

約数ペア:

[(1, 20197456), (2, 10098728), (4, 5049364), (8, 2524682), (16, 1262341), (19, 1063024), (29, 696464), (38, 531512), (58, 348232), (76, 265756), (79, 255664), (116, 174116), (152, 132878), (158, 127832), (232, 87058), (304, 66439), (316, 63916), (464, 43529), (551, 36656), (632, 31958), (841, 24016), (1102, 18328), (1264, 15979), (1501, 13456), (1682, 12008), (2204, 9164), (2291, 8816), (3002, 6728), (3364, 6004), (4408, 4582)]