21072140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2411}}^1$

素因数の和:2462

約数の個数: 48

約数和(自身を含む): 48625920

約数和(自身を除く): 27553780

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 2411, 4370, 4822, 8740, 9644, 12055, 24110, 45809, 48220, 55453, 91618, 110906, 183236, 221812, 229045, 277265, 458090, 554530, 916180, 1053607, 1109060, 2107214, 4214428, 5268035, 10536070, 21072140]

約数ペア:

[(1, 21072140), (2, 10536070), (4, 5268035), (5, 4214428), (10, 2107214), (19, 1109060), (20, 1053607), (23, 916180), (38, 554530), (46, 458090), (76, 277265), (92, 229045), (95, 221812), (115, 183236), (190, 110906), (230, 91618), (380, 55453), (437, 48220), (460, 45809), (874, 24110), (1748, 12055), (2185, 9644), (2411, 8740), (4370, 4822)]